# A150744 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 29 4 125 5 522 6 2368 7 10369 8 48427 9 218353 10 1033431 11 4763553 12 22711231 13 106299072 14 509809530 15 2410736596 16 11620607296 17 55359720508 18 267922804476 19 1283881994116 20 6232712214286 21 30010216869963 22 146049623795791 23 705957730100002 24 3442921629724988 25 16694925892971832 26 81568648137262758