# A028561 (b-file synthesized from sequence entry) 1 0 2 1 3 5 4 22 5 137 6 273 7 715 8 863 9 2731 10 8541 11 486618 12 877173 13 1378507 14 1731746 15 2273915 16 2436099 17 5401396 18 7153679 19 7560069 20 14529486 21 23887419 22 23975475