# A013415 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 -90 4 2520 5 -368550 6 36798300 7 -8485126650 8 1746971226000 9 -623950950372750 10 216093789514102500 11 -111905269600936061250 12 58297381976449590975000 13 -41488228251938936311593750