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A017331 a(n) = (10*n + 5)^3. 1
125, 3375, 15625, 42875, 91125, 166375, 274625, 421875, 614125, 857375, 1157625, 1520875, 1953125, 2460375, 3048625, 3723875, 4492125, 5359375, 6331625, 7414875, 8615125, 9938375, 11390625 (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 (4,-6,4,-1).

FORMULA

G.f.: 125*(x+1)*(x^2 + 22*x + 1)/(x-1)^4. [Colin Barker, Nov 14 2012]

PROG

(MAGMA) [(10*n+5)^3: n in [0..35]]; // Vincenzo Librandi, Aug 02 2011

(PARI) a(n)=(10*n+5)^3 \\ Charles R Greathouse IV, Aug 02 2011

CROSSREFS

Sequence in context: A119633 A017223 A265470 * A264139 A030690 A017451

Adjacent sequences:  A017328 A017329 A017330 * A017332 A017333 A017334

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified November 19 22:34 EST 2019. Contains 329323 sequences. (Running on oeis4.)