# A012566 (b-file synthesized from sequence entry) 0 1 1 -1 2 -15 3 -201 4 1025 5 505199 6 45962865 7 672778599 8 -885967354495 9 -245542561428001 10 -22172563647911055 11 14487811265589717399 12 9628380148436165613185 13 2365618724494349248126799