A092185 a(n) = (5/6)*n^3+(5/2)*n^2+(8/3)*n.

0, 6, 22, 53, 104, 180, 286, 427, 608, 834, 1110, 1441, 1832, 2288, 2814, 3415, 4096, 4862, 5718, 6669, 7720, 8876, 10142, 11523, 13024, 14650, 16406, 18297, 20328, 22504, 24830, 27311, 29952, 32758, 35734, 38885, 42216, 45732, 49438, 53339, 57440, 61746, 66262

Offset

0,2

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).

Formula

a(n)= +4*a(n-1) -6*a(n-2) +4*a(n-3) -a(n-4). G.f.: x*(6-2*x+x^2)/(x-1)^4. - R. J. Mathar, Jun 21 2010

Mathematica

LinearRecurrence[{4, -6, 4, -1}, {0, 6, 22, 53}, 50] (* Harvey P. Dale, May 27 2012 *)

Prog

(PARI) a(n)=(5/6)*n^3+(5/2)*n^2+(8/3)*n \\ Charles R Greathouse IV, Oct 18 2022

Crossrefs

Partial sums of A005891.

Sequence in context: A216050 A202803 A366917 * A216894 A212692 A034134

Adjacent sequences: A092182 A092183 A092184 * A092186 A092187 A092188

Keyword

nonn,easy

Author

N. J. A. Sloane, Apr 02 2004

Status

approved