# A088181 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 49 4 400 5 4081 6 49964 7 713665 8 11649936 9 213946513 10 4365604372 11 97988751433 12 2399366732888 13 63647177397961 14 1818219651069852 15 55651486523443537 16 1816920458689600288 17 63026617425620098465