Triangle of signed numbers used for the computation of the column sequences of triangle A089504.

A089505

Triangle of signed numbers used for the computation of the column sequences of triangle A089504.

Terms

    a(0) =1a(1) =-1a(2) =4a(3) =1a(4) =-24a(5) =50a(6) =-1a(7) =114a(8) =-950a(9) =1350a(10) =31a(11) =-15504a(12) =400520a(13) =-1897200a(14) =2052855a(15) =-9269a(16) =19612560a(17) =-1431859000a(18) =17333030000a(19) =-56265334125a(20) =49236404224a(21) =342953a(22) =-3011508588a(23) =594221485000a(28) =-9945637

External references