# A006427 (b-file synthesized from sequence entry)
1 20
2 1071
3 26320
4 431739
5 5494896
6 58677420
7 550712668
8 4681144391
9 36786186216
10 271221867098
11 1896796135920
12 12688048319278
13 81709791432384
14 509222462694582
15 3083998029716868
16 18213177504318335
17 105186858991413976
18 595499805083872458
19 3311524095424508480