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8, 35, 80, 143, 224, 323, 440, 575, 728, 899, 1088, 1295, 1520, 1763, 2024, 2303, 2600, 2915, 3248, 3599, 3968, 4355, 4760, 5183, 5624, 6083, 6560, 7055, 7568, 8099, 8648, 9215, 9800, 10403, 11024, 11663, 12320, 12995, 13688, 14399, 15128, 15875, 16640
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(n)=A005563(3n-1). [From Paul Curtz (bpcrtz(AT)free.fr), Oct 28 2008]
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..3000
Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| a(2n) = A136017(n). - Paul Curtz, Sep 30 2008
a(n) = A016777(n)*A016789(n-1). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 15 2009]
G.f. x*(-8-11*x+x^2) / (x-1)^3 . - R. J. Mathar, Jul 01 201
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MATHEMATICA
| Table[9n^2 - 1, {n, 1, 100}]
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PROG
| (MAGMA) [9*n^2-1: n in [1..50]]; // Vincenzo Librandi, May 09 2011
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CROSSREFS
| Cf. A001359, A006512, A037074.
Sequence in context: A126395 A203445 A158991 * A100907 A168566 A058102
Adjacent sequences: A136013 A136014 A136015 * A136017 A136018 A136019
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KEYWORD
| nonn,easy
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Dec 10 2007
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