# A127691 (b-file synthesized from sequence entry) 0 -1 1 0 2 0 3 2 4 64 5 2002 6 69264 7 2697354 8 117899520 9 5740530914 10 308814720400 11 18213955960378 12 1169672907313728 13 81286160430474066 14 6080123714344570128 15 487166244246501489002 16 41636260100744439399424 17 3781449867356996500139458 18 363724112817207189865471248