# A090253 (b-file synthesized from sequence entry)
1 2
2 3
3 7
4 23
5 163
6 3761
7 613049
8 2305677323
9 1413493177187867
10 3259059164857285852640107
11 4606657893577361399569662402327877981883
12 15013370627425459052324121468319040208855976676229499210665181583