# 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