# A125513 (b-file synthesized from sequence entry) 1 2 2 4 3 8 4 15 5 26 6 48 7 89 8 165 9 305 10 561 11 1034 12 1908 13 3521 14 6496 15 11982 16 22101 17 40770 18 75210 19 138741 20 255934 21 472117 22 870911 23 1606567 24 2963628 25 5466988 26 10084919 27 18603592 28 34317946 29 63306130 30 116780470 31 215424285 32 397391986 33 733066807