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A017306 a(n) = (10*n + 3)^2. 1
9, 169, 529, 1089, 1849, 2809, 3969, 5329, 6889, 8649, 10609, 12769, 15129, 17689, 20449, 23409, 26569, 29929, 33489, 37249, 41209, 45369, 49729, 54289, 59049, 64009, 69169, 74529, 80089, 85849 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
G.f.: -(9 + 142*x + 49*x^2)/(x-1)^3. - R. J. Mathar, Mar 20 2018
PROG
(Magma) [(10*n+3)^2: n in [0..35]]; // Vincenzo Librandi, Jul 31 2011
(PARI) a(n)=(10*n+3)^2 \\ Charles R Greathouse IV, Jun 17 2017
CROSSREFS
Sequence in context: A132874 A223289 A281996 * A210089 A243949 A202836
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)