# A138477 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 2 4 3 5 6 6 15 7 30 8 55 9 110 10 231 11 462 12 903 13 1806 14 3655 15 7310 16 14535 17 29070 18 58311 19 116622 20 232903 21 465806 22 932295 23 1864590 24 3727815 25 7455630 26 14913991 27 29827982 28 59650503 29 119301006 30 238612935 31 477225870 32 954429895 33 1908859790 34 3817763271 35 7635526542