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A189836 a(n) = n^2 + 11. 5
11, 12, 15, 20, 27, 36, 47, 60, 75, 92, 111, 132, 155, 180, 207, 236, 267, 300, 335, 372, 411, 452, 495, 540, 587, 636, 687, 740, 795, 852, 911, 972, 1035, 1100, 1167, 1236, 1307, 1380, 1455, 1532, 1611, 1692, 1775, 1860, 1947 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..10000

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

FORMULA

From G. C. Greubel, Jan 13 2018: (Start)

G.f.: (11 - 21*x + 12*x^2)/(1 - x)^3.

E.g.f.: (11 + x + x^2)*exp(x). (End)

MATHEMATICA

Table[n^2+11, {n, 0, 100}]

PROG

(PARI) a(n)=n^2+11 \\ Charles R Greathouse IV, Jun 17 2017

(MAGMA) [n^2 + 11: n in [0..50]]; // G. C. Greubel, Jan 13 2018

CROSSREFS

Cf. A002522, A059100, A117950, A087475.

Sequence in context: A274566 A213309 A128997 * A292683 A139138 A249766

Adjacent sequences:  A189833 A189834 A189835 * A189837 A189838 A189839

KEYWORD

nonn,easy

AUTHOR

Vladimir Joseph Stephan Orlovsky, Apr 28 2011

STATUS

approved

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Last modified July 19 08:49 EDT 2019. Contains 325155 sequences. (Running on oeis4.)