# A009240 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 5 4 17 5 113 6 673 7 5669 8 48033 9 494081 10 5387009 11 65835109 12 871869745 13 12394430129 14 192177458593 15 3124415825605 16 55316788832065 17 1014225530028161 18 20139680768683777 19 411568350375102789