# A117259 (b-file synthesized from sequence entry) 0 1 1 1 2 -2 3 32 4 -2560 5 917504 6 -1409286144 7 9070970929152 8 -241505530017742848 9 26378844025404658810880 10 -11755594669932654094842855424 11 21291459481433341027538627037495296 12 -156279993920424129009046403691280672489472