# A053774 (b-file synthesized from sequence entry)
1 1
2 3
3 57
4 1233
5 75393
6 339089409
7 2607120373761
8 42451338836860929
9 3767776947041641791489
10 355742034243147691726340097
11 91926159597577085028716636536833
12 97320453584330647458564330111836880897
13 145554614131872292109665186286397182040866817