# A020521 (b-file synthesized from sequence entry)
0 13
1 8191
2 22369621
3 78536544841
4 300239975158033
5 1190112520884487201
6 4797324681010433232961
7 19495118728903626376364161
8 79538861190790864407636279553
9 325153619321163373997995856232961
10 1330527338889299954891005307651097601