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, 33650, 37170, 39081, 42966, 45067, 49335

Offset

3,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (1,3,-3,-3,3,1,-1).

Formula

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

Prog

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

Crossrefs

Cf. A026374.

Sequence in context: A066183 A262297 A048746 * A054492 A128525 A083334

Adjacent sequences: A026379 A026380 A026381 * A026383 A026384 A026385

Keyword

nonn,easy

Author

Clark Kimberling

Status

approved