# A174909 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 2 5 5 6 15 7 8 8 14 9 35 10 105 11 48 12 88 13 154 14 385 15 1155 16 480 17 624 18 1144 19 2002 20 5005 21 15015 22 5760 23 8160 24 10608 25 19448 26 34034 27 85085 28 255255 29 92160 30 109440 31 155040 32 201552 33 369512 34 646646 35 1616615 36 4849845 37 1658880 38 2119680 39 2517120 40 3565920