# A065954 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 5 5 9 6 15 7 26 8 48 9 87 10 160 11 296 12 551 13 1032 14 1941 15 3663 16 6936 17 13171 18 25076 19 47853 20 91515 21 175351 22 336586 23 647131 24 1246070 25 2402691 26 4638908 27 8967212 28 17353538 29 33618332 30 65191863 31 126535914 32 245818071 33 477938270 34 929968028 35 1810857391 36 3528610690 37 6880357956