# A009648 (b-file synthesized from sequence entry) 0 0 1 1 2 -3 3 10 4 -44 5 255 6 -1841 7 15818 8 -156960 9 1762709 10 -22076535 11 304867506 12 -4600188108 13 75280188035 14 -1327718893749 15 25103478695090 16 -506480711742496 17 10860420245412873 18 -246630317697276235 19 5912837973247721914