# A006794 (b-file synthesized from sequence entry) 1 3 2 5 3 11 4 13 5 41 6 89 7 317 8 337 9 991 10 1873 11 2053 12 2377 13 4093 14 4297 15 4583 16 6569 17 13033 18 15877 19 843301 20 1098133 21 3267113