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1, 121, 441, 961, 1681, 2601, 3721, 5041, 6561, 8281, 10201, 12321, 14641, 17161, 19881, 22801, 25921, 29241, 32761, 36481, 40401, 44521, 48841, 53361, 58081, 63001, 68121, 73441, 78961, 84681, 90601, 96721, 103041, 109561, 116281, 123201
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| G.f.: (1+118*x+81*x^2)/(1-x)^3 - Bruno Berselli, Jul 30 2011
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CROSSREFS
| (MAGMA) [(10*n+1)^2: n in [0..35]]; // Vincenzo Librandi, Jul 30 2011
(PARI) for(n=0, 35, print1((10*n+1)^2", ")); \\ Bruno Berselli, Jul 30 2011
Sequence in context: A167721 A128608 A144719 * A036304 A052082 A062555
Adjacent sequences: A017279 A017280 A017281 * A017283 A017284 A017285
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms by Bruno Berselli, Jul 30 2011
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