# A018162 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 9 5 17 6 29 7 52 8 93 9 163 10 289 11 509 12 897 13 1581 14 2787 15 4913 16 8658 17 15259 18 26891 19 47392 20 83521 21 147192 22 259403 23 457156 24 805665 25 1419857 26 2502271 27 4409853 28 7771662 29 13696315 30 24137569 31 42538611 32 74967511