# A307786 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 44 6 148 7 528 8 1972 9 7647 10 30605 11 125801 12 529131 13 2270481 14 9914870 15 43973755 16 197744417 17 900327160 18 4145285618 19 19280282194 20 90507546094 21 428476211848 22 2044274855774 23 9823314566417 24 47516954475991 25 231260870664189