# A018084 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 7 4 14 5 27 6 52 7 101 8 196 9 379 10 733 11 1418 12 2744 13 5307 14 10267 15 19860 16 38416 17 74309 18 143739 19 278040 20 537824 21 1040332 22 2012353 23 3892567 24 7529536 25 14564655 26 28172943 27 54495951 28 105413504 29 203905179 30 394421215 31 762943322 32 1475789056 33 2854672519 34 5521897022