# A307465 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 33 6 82 7 201 8 489 9 1185 10 2866 11 6925 12 16725 13 40385 14 97506 15 235409 16 568337 17 1372097 18 3312546 19 7997205 20 19306973 21 46611169 22 112529330 23 271669849 24 655869049 25 1583407969 26 3822685010 27 9228778013 28 22280241061 29 53789260161 30 129858761410