# A012441 (b-file synthesized from sequence entry) 0 1 1 0 2 12 3 -120 4 11088 5 -559680 6 96647232 7 -11918734464 8 3443607499008 9 -785681136728064 10 344346566147423232 11 -125647543062169835520 12 77921368897600000020480 13 -41570816325816575416320000