# A357226 (b-file synthesized from sequence entry) 0 1 1 1 2 7 3 73 4 861 5 11112 6 151822 7 2159143 8 31627140 9 473909468 10 7230035454 11 111924733904 12 1753728878625 13 27759947012294 14 443247756591472 15 7130680715081049 16 115466397372003479 17 1880525144522628300 18 30783524695736369568 19 506215648672559259036 20 8358521379108937920413