# A149362 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 12 4 44 5 160 6 630 7 2505 8 10274 9 42813 10 181411 11 778323 12 3376953 13 14792252 14 65335900 15 290694175 16 1301823805 17 5863740425 18 26550162371 19 120780915859 20 551812209781 21 2530915409480 22 11649789216869 23 53800623112057 24 249215824027266 25 1157671306509836 26 5391739956937891 27 25172642088618386