login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A017090 a(n) = (8*n + 2)^2. 2
4, 100, 324, 676, 1156, 1764, 2500, 3364, 4356, 5476, 6724, 8100, 9604, 11236, 12996, 14884, 16900, 19044, 21316, 23716, 26244, 28900, 31684, 34596, 37636, 40804, 44100, 47524, 51076, 54756, 58564 (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.: -4*(1 + 22*x + 9*x^2)/(x-1)^3. - R. J. Mathar, Jul 14 2016

PROG

(MAGMA) [(8*n+2)^2: n in [0..35]]; // Vincenzo Librandi, Jul 12 2011

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

CROSSREFS

Cf. A017089 (8n+2), A000290 (n^2).

Sequence in context: A091268 A326085 A158082 * A029995 A244352 A173987

Adjacent sequences:  A017087 A017088 A017089 * A017091 A017092 A017093

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 13 17:37 EDT 2022. Contains 356107 sequences. (Running on oeis4.)