# A149657 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 17 4 59 5 239 6 977 7 3915 8 16303 9 69667 10 296063 11 1267901 12 5522509 13 24150555 14 105718063 15 466486197 16 2071291345 17 9210313171 18 41084031479 19 184159624765 20 827654854537 21 3725656776357 22 16820145214269 23 76148179555723 24 345270955147199 25 1568181772886751 26 7138177586911855 27 32546518933448565