A144286 Row sums of triangle A144285 (called S2hat(-4)).

1, 5, 41, 561, 10281, 243481, 6965401, 235103417, 9112789817, 399330154617, 19502558109177, 1050527843743993, 61855087724349433, 3952225158444979193, 272326955744655069689, 20128716335079745234425, 1588573078022351774367225, 133323969310853649963402745

Offset: 1

Author

Wolfdieter Lang, Oct 09 2008

Keywords

• nonn
• easy

Crossrefs

Cf. A144285.

Formula

a(n) = Sum_{m=1..n} A144285(n,m), n>=1.