A091548 Alternating row sums of triangle A091543.

1, 1, -1, -53, -1083, -24099, -120477, 115958039, 30323462809, 7554183583865, 2000735772375143, 483441809221224835, -15004002104132799283, -243176330287496140346187, -424738050855195910944014901, -660294012298780945217254277745

Offset: 1

Author

Wolfdieter Lang, Feb 13 2004

Keywords

• sign
• easy

Formula

a(n)=sum(A091543(n, m)*(-1)^m, m=0..n-1), n>=1.