# A009673 (b-file synthesized from sequence entry) 0 0 1 2 2 -4 3 246 4 -6728 5 614890 6 -55387212 7 8450249822 8 -1527219657616 9 372125006557650 10 -109398463655126420 11 39693749843486489542 12 -17074884680310522056664 13 8684084243275368565840826