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A133496
a(n) = (29*n)^2.
1
0, 841, 3364, 7569, 13456, 21025, 30276, 41209, 53824, 68121, 84100, 101761, 121104, 142129, 164836, 189225, 215296, 243049, 272484, 303601, 336400, 370881, 407044, 444889, 484416, 525625, 568516, 613089, 659344, 707281, 756900, 808201
OFFSET
0,2
FORMULA
G.f.: -841*x*(1+x) / (x-1)^3 . - R. J. Mathar, Mar 13 2015
EXAMPLE
a(1) = 29^2 = 841, a(2) = 58^2 = 3364, a(3) = 87^2 = 7569.
PROG
(Magma) [(29*n)^2: n in [0..50]]; // Vincenzo Librandi, Apr 26 2011
(PARI) a(n)=(29*n)^2 \\ Charles R Greathouse IV, Jun 17 2017
CROSSREFS
Cf. A016850.
Sequence in context: A159690 A210470 A108324 * A361675 A253599 A121499
KEYWORD
nonn,easy
AUTHOR
Richard Choulet, Dec 23 2007
EXTENSIONS
More terms from Philippe Deléham, Dec 21 2008
a(12) corrected by Vincenzo Librandi, Apr 26 2011
STATUS
approved