# A013008 (b-file synthesized from sequence entry) 0 1 1 -4 2 80 3 -4384 4 451328 5 -74726784 6 18162914304 7 -6087614197760 8 2690808196562944 9 -1516485688823611392 10 1061352718471077658624 11 -903110171035290053246976 12 918161695966849718656434176