# A024504 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 1 4 2 5 3 6 7 7 13 8 25 9 47 10 90 11 172 12 330 13 634 14 1224 15 2366 16 4585 17 8902 18 17309 19 33707 20 65730 21 128330 22 250828 23 490750 24 961053 25 1883664 26 3694880 27 7252914 28 14246796 29 28002324 30 55071237 31 108365983 32 213345529 33 420226042 34 828092495 35 1632525204