# A012758 (b-file synthesized from sequence entry) 0 0 1 1 2 -1 3 6 4 -18 5 123 6 -855 7 8610 8 -92540 9 1220765 10 -17627085 11 291506270 12 -5265113502 13 105134332743 14 -2272750891411 15 53258927842666 16 -1338863892701400 17 36033888424535961 18 -1032074699069841561