# A118173 (b-file synthesized from sequence entry) 0 1 1 3 2 5 3 15 4 29 5 55 6 93 7 247 8 477 9 887 10 1501 11 3959 12 7645 13 14199 14 24029 15 63351 16 122333 17 227191 18 384477 19 1013623 20 1957341 21 3635063 22 6151645 23 16217975 24 31317469 25 58161015 26 98426333 27 259487607 28 501079517 29 930576247 30 1574821341 31 4151801719