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A010005
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a(0) = 1, a(n) = 15*n^2 + 2 for n>0.
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1
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1, 17, 62, 137, 242, 377, 542, 737, 962, 1217, 1502, 1817, 2162, 2537, 2942, 3377, 3842, 4337, 4862, 5417, 6002, 6617, 7262, 7937, 8642, 9377, 10142, 10937, 11762, 12617, 13502, 14417, 15362, 16337, 17342, 18377, 19442, 20537, 21662, 22817, 24002, 25217, 26462
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Bruno Berselli, Table of n, a(n) for n = 0..1000
Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| G.f.: (1+x)*(1+13*x+x^2)/(1-x)^3. - Bruno Berselli, Feb 06 2012
E.g.f.: (x*(x+1)*15+2)*e^x-1. - Gopinath A. R., Feb 14 2012
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MATHEMATICA
| Join[{1}, 15 Range[42]^2 + 2] (* Bruno Berselli, Feb 06 2012 *)
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PROG
| (PARI) A010005(n)=15*n^2+2-!n \\ - M. F. Hasler, Feb 14 2012
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CROSSREFS
| Cf. A206399.
Sequence in context: A039607 A142299 A195025 * A172076 A063522 A145850
Adjacent sequences: A010002 A010003 A010004 * A010006 A010007 A010008
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KEYWORD
| nonn,easy,changed
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Bruno Berselli, Feb 06 2012
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