# A121776 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 6 4 10 5 16 6 23 7 36 8 52 9 76 10 118 11 181 12 271 13 427 14 675 15 1057 16 1686 17 2705 18 4318 19 6923 20 11142 21 17966 22 28999 23 46793 24 75522 25 122018 26 197254 27 318907 28 515616 29 833796 30 1348542 31 2181304 32 3528487 33 5707947 34 9234075 35 14938991 36 24169111 37 39103056 38 63265607 39 102359886