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1, 6, -79, -1844, -13983, -61318, -162287, 0, 3667649, 35570638, 272475249, 1957839572, 13805455393, 96826261890, 678117659345, 4747390650568, 33232662134145, 232630103648534, 1628412985690417, 11398894291501404, 79792265017612001, 558545862282195466
(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..200
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FORMULA
| Contribution by Bruno Berselli, May 16 2011: (Start)
(1-9*x-85*x^2-407*x^3+5991*x^4+15665*x^5+8245*x^6+831*x^7+8*x^8)/((1-7*x)*(1-x)^8).
a(n) = 7^n-n^7. (End)
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MATHEMATICA
| Table[7^n - n^7, {n, 0, 25}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 08 2006
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PROG
| (MAGMA) [7^n-n^7: n in [0..25]]; // Vincenzo Librandi, May 16 2011
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CROSSREFS
| Cf. A024012, A024026, A058794, A024040, A024054, A024068 [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 15 2009]
Sequence in context: A184553 A129524 A131237 * A132547 A167570 A177776
Adjacent sequences: A024079 A024080 A024081 * A024083 A024084 A024085
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KEYWORD
| sign
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 08 2006
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