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 A024006 a(n) = 1 - n^8. 5
 1, 0, -255, -6560, -65535, -390624, -1679615, -5764800, -16777215, -43046720, -99999999, -214358880, -429981695, -815730720, -1475789055, -2562890624, -4294967295, -6975757440, -11019960575, -16983563040, -25599999999, -37822859360, -54875873535 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..420 Index entries for linear recurrences with constant coefficients, signature (9, -36, 84, -126, 126, -84, 36, -9, 1). FORMULA Sum_{n>=2} -1/a(n) = 15/16 - Pi*(coth(Pi)/8) + Pi * (sin(sqrt(2)*Pi) + sinh(sqrt(2)*Pi)) / (4*sqrt(2) * (cos(sqrt(2)*Pi) - cosh(sqrt(2)*Pi))) = 0.0040926982992862873... . - Vaclav Kotesovec, Feb 14 2015 MATHEMATICA Table[1-n^8, {n, 0, 40}] (* and *) LinearRecurrence[{9, -36, 84, -126, 126, -84, 36, -9, 1}, {1, 0, -255, -6560, -65535, -390624, -1679615, -5764800, -16777215}, 40] (* Vladimir Joseph Stephan Orlovsky, Apr 15 2011 *) PROG (MAGMA) [1-n^8: n in [0..50]]; // Vincenzo Librandi, Apr 29 2011 (PARI) a(n)=1-n^8 \\ Charles R Greathouse IV, Oct 07 2015 CROSSREFS Cf. A024004. Sequence in context: A022524 A261032 A069093 * A258809 A321553 A321547 Adjacent sequences:  A024003 A024004 A024005 * A024007 A024008 A024009 KEYWORD sign,easy AUTHOR STATUS approved

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Last modified December 15 04:20 EST 2019. Contains 329991 sequences. (Running on oeis4.)