# A019595 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 7 4 14 5 30 6 33 7 66 8 177 9 227 10 686 11 932 12 1283 13 1623 14 1827 15 3603 16 7429 17 15750 18 16438 19 18650 20 22139 21 22967 22 31412 23 35482 24 36075 25 62639 26 128086 27 175642 28 201758 29 239985 30 261506 31 301601 32 786609 33 853738 34 2283613 35 2510846 36 2568758