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 A133499 a(n) = n^7 - n. 4
 0, 0, 126, 2184, 16380, 78120, 279930, 823536, 2097144, 4782960, 9999990, 19487160, 35831796, 62748504, 105413490, 170859360, 268435440, 410338656, 612220014, 893871720, 1279999980, 1801088520, 2494357866, 3404825424, 4586471400, 6103515600, 8031810150 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS All the terms are divisible by 3. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (8,-28,56,-70,56,-28,8,-1). FORMULA G.f.: 42*x^2*(3+28*x+58*x^2+28*x^3+3*x^4) / (x-1)^8 . - R. J. Mathar, Mar 13 2015 a(n) = 42*A030180(n). - Philippe Deléham, Mar 17 2016 EXAMPLE If n=2, then n^7 - n = 126. If n=13, then n^7 - n = 62748504. MATHEMATICA Table[n^7 - n, {n, 0, 40}] (* and *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {0, 0, 126, 2184, 16380, 78120, 279930, 823536}, 40] (* Vladimir Joseph Stephan Orlovsky, Feb 20 2012 *) PROG (MAGMA) [n^7-n: n in [0..40]]; // Vincenzo Librandi, May 02 2011 CROSSREFS Cf. A030180, A061167. Sequence in context: A172140 A331100 A196414 * A219005 A202398 A113857 Adjacent sequences:  A133496 A133497 A133498 * A133500 A133501 A133502 KEYWORD nonn,easy AUTHOR Parthasarathy Nambi, Dec 01 2007 EXTENSIONS Corrected and extended by Jonathan Vos Post, Dec 02 2007 STATUS approved

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Last modified May 26 08:39 EDT 2020. Contains 334620 sequences. (Running on oeis4.)