# A045677 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 0 4 0 5 0 6 2 7 2 8 8 9 14 10 36 11 62 12 142 13 252 14 524 15 968 16 1928 17 3600 18 7044 19 13286 20 25740 21 48916 22 94364 23 180314 24 347630 25 666996 26 1286712 27 2477342 28 4785824 29 9240012 30 17880320 31 34604066 32 67078024 33 130085052 34 252583200 35 490722344 36 954313264