# A012665 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 110 4 4552 5 259978 6 26613556 7 3743931438 8 726661861104 9 184792697093010 10 59372516216901100 11 23630807435854817398 12 11376266381571626239720 13 6525912682382427845314906