Exponential Growth: Reach of My Family Tree

My family tree contains two types of people: sourced and unsourced. Every person without a source is marked as “private” and tagged as “unsourced” so that they do not “pollute” my family tree web site.

Gramps, my family tree software of choice, has a report option called “Number of Ancestors Report”. It generates the number of ancestors from each generation there are in a family tree. It lacks an option to exclude people marked as private. Below is a formatted version of the output report, which includes sourced and unsourced ancestors.

Generation Number Found Percent
1 1 1 100.00%
2 2 2 100.00%
3 4 4 100.00%
4 8 8 100.00%
5 16 16 100.00%
6 32 26 81.25%
7 64 33 51.56%
8 128 40 31.25%
9 256 39 15.23%
10 512 36 7.42%
11 1,024 47 4.88%
12 2,048 48 2.34%
13 4,096 58 1.42%
14 8,192 42 0.51%
15 16,384 32 0.20%
16 32,768 43 0.13%
17 65,536 35 0.05%
18 131,072 34 0.03%
19 262,144 16 0.01%
20 524,288 18 0.00%
21 1,048,576 13 0.00%
22 2,097,152 12 0.00%
23 4,194,304 15 0.00%
24 8,388,608 17 0.00%
25 16,777,216 16 0.00%
26 33,554,432 13 0.00%
27 67,108,864 15 0.00%
28 134,217,728 16 0.00%
29 268,435,456 14 0.00%
30 536,870,912 15 0.00%
31 1,073,741,824 9 0.00%
32 2,147,483,648 8 0.00%
33 4,294,967,296 2 0.00%
34 8,589,934,592 4 0.00%
35 17,179,869,184 4 0.00%
Total ancestors in generations 2 to 35 750 0.00%

2 thoughts on “Exponential Growth: Reach of My Family Tree

  1. Hello.
    I am pleased to see as someone who is a grandgrandson of this Anthony (Anton Fritz born 1829 in Lech am Arlberg Anger 13, who was one of the brothers of Benedict Fritz who emmigrated to America in1853) that in times of Internet its easy to look elsewhere in the World about relatives
    So I landed on your site . Its very interesting your investigation of genealogie in Amerika of Benedict Fritz. What I have to say first is that Benedict was born in Lech am Arlberg which is not Tyrol but Vorarlberg wich is the very west Country of Austria. Its known in Europe as very famous
    skiressort (aslike Aspen in Amerika) If you make a look on the http://www.gemeinde.lech.eu site and go there to “archiv” you will see the “Huber hus” which is now a Museum but it was also the Birthhouse of Benedict. Benedicts aunt Anna Katharia Fritz married 1815 Josef Huber and they stayed in Lech at this house, so the name of the House changed to Huberhaus. <<<<<my Cousin Bruno Fritz, who was in Blakesburg some year ago made some Investigation about Fritz in Austria and its dates now back in15?? something, that they are mentioned at this Place.
    Its a pleasure for me to give you a little glimps of Benedicts habitat in Austria.
    Best Wishes
    Gerold Fritz

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