# A012633 (b-file synthesized from sequence entry) 0 1 1 0 2 -12 3 360 4 -9968 5 -20160 6 62513088 7 -11126763648 8 1288066390272 9 19652873951232 10 -83472832434404352 11 36956701107235768320 12 -9713959158890293555200 13 -340935340396162516992000