# A067247 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 6 5 10 6 16 7 25 8 39 9 63 10 99 11 158 12 253 13 402 14 639 15 1021 16 1633 17 2617 18 4153 19 6633 20 10460 21 16598 22 26146 23 41409 24 64733 25 102006 26 159165 27 249698 28 387515 29 604769 30 933531 31 1451882 32 2232319 33 3451823