A090437 Alternating row sums of array A078740 ((3,2)-Stirling2).

1, 1, -17, -299, 1921, 451621, 23016631, -138672407, -208026131039, -31455532865879, -2214855733827329, 358045039222582141, 197933737480453452193, 51028310360637930765901, 6769736050165112232649351, -1644881699523140953828119599

Offset: 1

Author

Wolfdieter Lang, Dec 23 2003

Keywords

• sign
• easy

Crossrefs

Cf. A078740.

Formula

a(n) = Sum_{k=2..2*n} A078740(n, k)*(-1)^k, n>=1.