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A101098
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a(1)=1; thereafter, a(n+1) = 20n^3 + 10n.
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3
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1, 30, 180, 570, 1320, 2550, 4380, 6930, 10320, 14670, 20100, 26730, 34680, 44070, 55020, 67650, 82080, 98430, 116820, 137370, 160200, 185430, 213180, 243570, 276720, 312750, 351780, 393930, 439320, 488070, 540300, 596130, 655680, 719070, 786420, 857850
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Shells (nexus numbers) of shells of the fifth powers (A000584).
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LINKS
| C. Rossiter, Depictions, Explorations and Formulas of the Euler/Pascal Cube.
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FORMULA
| a(n)=A068236(n-2), n>1. G.f.: x+30x^2(1+x)^2/(1-x)^4. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2008
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MATHEMATICA
| Table[If[n == 0, 1, 20*n^3 + 10*n], {n, 0, 100}] (* From Vladimir Joseph Stephan Orlovsky, Jun 19 2011 *)
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CROSSREFS
| Sequence in context: A140594 A100430 A159653 * A068236 A054559 A042756
Adjacent sequences: A101095 A101096 A101097 * A101099 A101100 A101101
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KEYWORD
| easy,nonn
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AUTHOR
| Cecilia Rossiter (cecilia(AT)noticingnumbers.net), Dec 15 2004
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EXTENSIONS
| Edited by Ralf Stephan, Dec 16 2004
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