A055906 Column 0 of triangle A055905.
1, -1, 2, -5, 12, -17, -62, 677, -2840, -1451, 119954, -866857, 472540, 52538185, -517302474, 410579683, 47022181040, -542323525061, 101360204230, 74342770852033, -905627986876452, -1359339244442825, 186336992053330034
Offset: 0