A026382 a(n) = T(n,n-3), where T is the array in A026374.

1, 6, 17, 45, 75, 144, 202, 330, 425, 630, 771, 1071, 1267, 1680, 1940, 2484, 2817, 3510, 3925, 4785, 5291, 6336, 6942, 8190, 8905, 10374, 11207, 12915, 13875, 15840, 16936, 19176, 20417, 22950, 24345, 27189, 28747, 31920

Offset: 3

Author

Clark Kimberling

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 3..1000

Crossrefs

Cf. A026374.

Programs

Haskell

a026382 = flip a026374 3  -- Reinhard Zumkeller, Feb 22 2014

Formula

G.f.: z^3*(1+5z+8z^2+13z^3)/[(1-z)^4*(1+z)^3]. - Emeric Deutsch, Jan 25 2004