# A050242 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 24 4 69 5 201 6 582 7 1683 8 4866 9 14065 10 40649 11 117480 12 339524 13 981243 14 2835846 15 8195747 16 23686148 17 68454240 18 197836425 19 571757881 20 1652410946 21 4775556267 22 13801613767 23 39887404081 24 115276737285 25 333155954000 26 962838576968