# A274763 (b-file synthesized from sequence entry) 1 1 2 10 3 215 4 7200 5 328090 6 18914190 7 1318595475 8 107813147200 9 10112867995550 10 1070215246700100 11 126122386636230950 12 16378717184245443000 13 2323753119238888045500 14 357594668486650175355750 15 59323244552378848484536875 16 10553747415214416889115286000 17 2004246729406751177924041663750 18 404685181230584369889138573637500 19 86569650968075614116679243211951250 20 19558042902565983702641321883519060000