# A174490 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 19
4 1921
5 42253
6 26628779
7 15317124535
8 521786071318529
9 1038675077390118457
10 124715000994291451743437
11 14203783261714481442742242211
12 49356730516809227634074385356860075