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-1, -1, 11, 35, 71, 119, 179, 251, 335, 431, 539, 659, 791, 935, 1091, 1259, 1439, 1631, 1835, 2051, 2279, 2519, 2771, 3035, 3311, 3599, 3899, 4211, 4535, 4871, 5219, 5579, 5951, 6335, 6731, 7139, 7559, 7991, 8435, 8891, 9359, 9839, 10331, 10835, 11351, 11879, 12419
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Star numbers A003154 minus 2.
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FORMULA
| a(n)=A003154(n)-2.
G.f.: (1-14*x+x^2)/(x-1)^3 [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 11 2009]
a(0)=-1, a(1)=-1, a(2)=11, a(n)=3*a(n-1)-3*a(n-2)+a(n-3) [From Harvey P. Dale, Nov 14 2011]
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MATHEMATICA
| Table[6n(n-1)-1, {n, 0, 50}] (* or *) LinearRecurrence[{3, -3, 1}, {-1, -1, 11}, 50] (* From Harvey P. Dale, Nov 14 2011 *)
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CROSSREFS
| Sequence in context: A029540 A118554 A092069 * A003777 A199817 A098116
Adjacent sequences: A103112 A103113 A103114 * A103116 A103117 A103118
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KEYWORD
| easy,sign
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AUTHOR
| Jacob Landon (jacoblandon(AT)aol.com), May 09 2009
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EXTENSIONS
| Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 11 2009
Entries rechecked by N. J. A. Sloane, Jul 18 2009
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