# A123995 (b-file synthesized from sequence entry)
1 2
2 7
3 89
4 1831
5 5591
6 9551
7 89689
8 396733
9 3851459
10 11981443
11 70396393
12 202551667
13 1872851947
14 10958687879
15 47203303159
16 767644374817
17 1999066711391
18 8817792098461
19 78610833115261
20 497687231721157
21 2069461000669981