# A331636 (b-file synthesized from sequence entry) 1 1 2 5 3 17 4 109 5 557 6 5785 7 47357 8 596365 9 7151841 10 106763725 11 1622633597 12 28757539337 13 526858352477 14 10758375762109 15 230342261913169 16 5344946955452877 17 130370767029201437 18 3394996816992588345 19 92801587319328673277 20 2681375183085608280093