# A015691 (b-file synthesized from sequence entry) 0 1 1 -15 2 255 3 -4845 4 101385 5 -2309535 6 56759175 7 -1494125325 8 41881856625 9 -1244022735375 10 38993819043375 11 -1285240980610125 12 44407270217165625 13 -1604088315616161375 14 60431927134988784375 15 -2369411881012489438125