# A012467 (b-file synthesized from sequence entry) 0 1 1 0 2 -12 3 480 4 -21168 5 741120 6 61942848 7 -29951061504 8 8015861467392 9 -1745546459848704 10 215844160641143808 11 91751419512905687040 12 -109687232118939992862720 13 71900040403600384794624000