# A121365 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 9 6 43 7 185 8 732 9 2737 10 9845 11 34449 12 118102 13 398585 14 1328607 15 4384393 16 14348912 17 46633953 18 150663529 19 484275617 20 1549681962 21 4939611241 22 15690529811 23 49686677721 24 156905298052 25 494251688849