# A058482 (b-file synthesized from sequence entry) 1 1 2 25 3 265 4 2161 5 16081 6 115465 7 816985 8 5745121 9 40294561 10 282298105 11 1976795305 12 13839692881 13 96884227441 14 678208723945 15 4747518463225 16 33232801429441 17 232630126566721 18 1628412435648985 19 11398891698588745 20 79792255837258801 21 558545832702224401