# A012208 (b-file synthesized from sequence entry) 0 1 1 -6 2 184 3 -13136 4 1679488 5 -335723264 6 96492653568 7 -37665610561536 8 19158060131778560 9 -12304193595906129920 10 9734505561510299566080 11 -9299736312230986726768640 12 10553185490408007072659537920