# A177773 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 39
5 1808
6 154470
7 21613904
8 4613731395
9 1428023881948
10 615891861903012
11 358339956451941720
12 273806861542425812854
13 268629162417425144396676
14 331966590301219201136933748
15 508293097203298105978769282272