# A012386 (b-file synthesized from sequence entry) 0 1 1 0 2 -12 3 -360 4 -7280 5 504000 6 121581504 7 14369939584 8 56810973440 9 -657138821830656 10 -255226784793623552 11 -45397358372525164544 12 15722139759017802895360 13 20152649683846086682296320