# A018145 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 4 4 7 5 11 6 18 7 29 8 46 9 75 10 121 11 195 12 316 13 510 14 824 15 1331 16 2150 17 3473 18 5611 19 9063 20 14641 21 23651 22 38206 23 61717 24 99698 25 161051 26 260161 27 420262 28 678889 29 1096674 30 1771561 31 2861769 32 4622886 33 7467784