# A174458 (b-file synthesized from sequence entry) 0 1 1 4 2 19 3 48 4 645 5 5346 6 9989 7 423680 8 4936673 9 22863284 10 717864203 11 10398234146 12 14778845999 13 2318706892436 14 41349958502663 15 67290481692176 16 1273710986008283 17 21639017114636720 18 1870679510063123381