Alternating row sums of triangle A090447.

A090451

Alternating row sums of triangle A090447.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =-2a(4) =21a(5) =-454a(6) =25285a(7) =-3606504a(8) =1328522713

External references