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 A076549 Numerator of (2n+1)(2n+2) B_{2n}, where B_n are the Bernoulli numbers. Also numerators of the asymptotic expansion of the polygamma function psi'''(z). 3
 2, 3, 2, -1, 4, -3, 10, -691, 280, -10851, 438670, -1222277, 3418052, -1181820455, 1077690978, -23749461029, 137853460416080, -84802531453387, 541314450257070, -26315271553053477373, 761798417598805340 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..100 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy]. Abramowitz and Stegun, Handbook of mathematical functions, p. 260 (6.4.14) Abramowitz and Stegun, Handbook of mathematical functions, p. 260 (6.4.14) MATHEMATICA Join[{2, 3}, Table[Numerator[(4 n^2 + 6 n + 2) BernoulliB[2 n]], {n, 1, 30}]] (* Vincenzo Librandi, Aug 02 2013 *) CROSSREFS Denominators are in A006956. Cf. A002427/A006955. Sequence in context: A129773 A105789 A259579 * A210500 A336126 A336153 Adjacent sequences: A076546 A076547 A076548 * A076550 A076551 A076552 KEYWORD easy,frac,sign AUTHOR Ralf Stephan, Oct 19 2002 STATUS approved

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Last modified April 22 06:39 EDT 2024. Contains 371888 sequences. (Running on oeis4.)