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A063397 T(4,n) with T(n,m) as in A063394. 4
1, 31, 111, 343, 979, 2655, 6943, 17663, 43967, 107519, 259071, 616447, 1451007, 3383295, 7823359, 17956863, 40943615, 92798975, 209190911, 469237759, 1047789567, 2329935871, 5161091071, 11391729663, 25060966399, 54962159615, 120191975423, 262127222783 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Colin Barker, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (9,-32,56,-48,16).

FORMULA

a(n) = (6*(-4+27*2^n)+191*2^n*n+15*2^(1+n)*n^2+2^n*n^3)/24 for n>0. - Colin Barker, May 27 2015

G.f.: -(76*x^5-244*x^4+280*x^3-136*x^2+22*x+1) / ((x-1)*(2*x-1)^4). - Colin Barker, May 27 2015

PROG

(PARI) Vec(-(76*x^5-244*x^4+280*x^3-136*x^2+22*x+1) / ((x-1)*(2*x-1)^4) + O(x^100)) \\ Colin Barker, May 27 2015

CROSSREFS

Cf. A063394, A063396, A063398.

Sequence in context: A225397 A142177 A281194 * A044282 A044663 A142228

Adjacent sequences:  A063394 A063395 A063396 * A063398 A063399 A063400

KEYWORD

easy,nonn

AUTHOR

Floor van Lamoen, Jul 16 2001

STATUS

approved

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Last modified December 7 20:04 EST 2021. Contains 349585 sequences. (Running on oeis4.)