# A026574 (b-file synthesized from sequence entry) 0 1 1 1 2 7 3 19 4 103 5 341 6 1809 7 6336 8 33899 9 121483 10 656199 11 2381512 12 12957809 13 47419503 14 259395664 15 954961034 16 5245001951 17 19397198595 18 106871608053