Antidiagonal sums of triangle A098495.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =-3a(4) =0a(5) =5a(6) =-2a(7) =-6a(8) =18a(9) =-28a(10) =-9a(11) =232a(12) =-949a(13) =2147a(14) =579a(15) =-34487a(16) =202078a(17) =-680541a(18) =527630a(19) =11789818a(20) =-104485820a(21) =520965294a(22) =-1270746269a(23) =-5790611092a(24) =98629011681a(25) =-729706466727