# A097119 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 3 5 9 6 21 7 41 8 75 9 141 10 281 11 577 12 1179 13 2369 14 4709 15 9353 16 18659 17 37365 18 74889 19 149937 20 299827 21 599289 22 1198101 23 2396137 24 4793051 25 9587421 26 19175449 27 38349409 28 76695403 29 153388273 30 306778917 31 613566153 32 1227140787 33 2454279365