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A017138 a(n) = (8*n+6)^2. 3
36, 196, 484, 900, 1444, 2116, 2916, 3844, 4900, 6084, 7396, 8836, 10404, 12100, 13924, 15876, 17956, 20164, 22500, 24964, 27556, 30276, 33124, 36100, 39204, 42436, 45796, 49284, 52900, 56644 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

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

FORMULA

G.f.: ( -36-88*x-4*x^2 ) / (x-1)^3. - R. J. Mathar, Aug 26 2015

PROG

(MAGMA) [(8*n+6)^2: n in [0..35]]; // Vincenzo Librandi, Jul 22 2011

(PARI) a(n)=(8*n+6)^2 \\ Charles R Greathouse IV, Jun 17 2017

CROSSREFS

Sequence in context: A211753 A211764 A255093 * A304378 A120465 A144523

Adjacent sequences:  A017135 A017136 A017137 * A017139 A017140 A017141

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 24 05:52 EDT 2019. Contains 326260 sequences. (Running on oeis4.)