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A173308 17*n*(n+1). 1
0, 34, 102, 204, 340, 510, 714, 952, 1224, 1530, 1870, 2244, 2652, 3094, 3570, 4080, 4624, 5202, 5814, 6460, 7140, 7854, 8602, 9384, 10200, 11050, 11934, 12852, 13804, 14790, 15810, 16864, 17952, 19074, 20230, 21420, 22644, 23902, 25194, 26520 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

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

FORMULA

a(n) = 34*A000217(n).

a(0)=0, a(1)=34, a(2)=102, a(n) = 3*a(n-1)-3*a(n-2)+a(n-3). G.f.: 34*x/(1-x)^3. - Colin Barker, Jan 25 2012

MATHEMATICA

Table[17n(n+1), {n, 0, 40}]  (* Harvey P. Dale, Apr 06 2011 *)

PROG

(PARI) a(n)=34*binomial(n+1, 2) \\ Charles R Greathouse IV, Jan 25 2012

(MAGMA) [17*n*(n+1): n in [0..50]]; // Vincenzo Librandi, Aug 20 2014

CROSSREFS

Cf. A000217.

Sequence in context: A159904 A282854 A165222 * A044285 A044666 A105088

Adjacent sequences:  A173305 A173306 A173307 * A173309 A173310 A173311

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Feb 16 2010

EXTENSIONS

Incorrect formulas and examples deleted by R. J. Mathar, Jan 04 2011

STATUS

approved

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Last modified June 1 04:57 EDT 2020. Contains 334758 sequences. (Running on oeis4.)