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A027903 n * (n + 1) * (3*n + 1). 1
0, 8, 42, 120, 260, 480, 798, 1232, 1800, 2520, 3410, 4488, 5772, 7280, 9030, 11040, 13328, 15912, 18810, 22040, 25620, 29568, 33902, 38640, 43800, 49400, 55458, 61992, 69020, 76560, 84630, 93248, 102432, 112200, 122570, 133560, 145188, 157472, 170430 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..38.

FORMULA

From Wesley Ivan Hurt, Dec 02 2013, (Start)

a(n) = n(n + 1)(3n + 1).

a(n) = 3n^3 + 4n^2 + n.

a(n) = A002378(n) * A016777(n).

a(n) = A049451(n) * A001477(n+1).

a(n) = A001477(n) * A000567(n-1).

a(n) = A001477(n) * A001477(n+1) * A016777(n).

a(n) = A117642(n) + A016742(n) + A001477(n). (end)

MAPLE

A027903:=n->n*(n + 1)*(3*n + 1); seq(A027903(n), n=0..100); # Wesley Ivan Hurt, Dec 02 2013

MATHEMATICA

Table[n (n + 1) (3*n + 1), {n, 0, 100}] (* Wesley Ivan Hurt, Dec 02 2013 *)

CROSSREFS

Sequence in context: A086392 A234860 A292059 * A231069 A319235 A341764

Adjacent sequences:  A027900 A027901 A027902 * A027904 A027905 A027906

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 18 09:28 EDT 2022. Contains 356204 sequences. (Running on oeis4.)