# A361218 (b-file synthesized from sequence entry) 1 1 2 4 3 11 4 29 5 94 6 263 7 968 8 3416 9 11520 10 41912 11 136972 12 481388 13 1743784 14 6275886 15 23615432 16 93819128 17 368019576 18 1367900808 19 5403282616 20 19831367476 21 76031433360 22 300581321056 23 1143307393600 24 4542840116352 25 17001097572544 26 65314285778004 27 246695766031432