# A275750 (b-file synthesized from sequence entry) 1 37 2 229 3 997 4 1048549 5 4194277 6 67108837 7 1125899906842597 8 72057594037927909 9 288230376151711717 10 1361129467683753853853498429727072845797 11 1393796574908163946345982392040522594123749 12 1725436586697640946858688965569256363112777243042596638790631055949797