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 A071301 Denominator of b(n), where b(n+1) = Sum_{k=0..n} b'((n^2-k^2)/n), b(0) = b(1) = 1, and b'(x) = b(x) if x is an integer and is linearly interpolated otherwise. 1
 1, 1, 1, 2, 6, 3, 15, 60, 70, 140, 540, 37800, 8316, 207900, 1351350, 75675600, 141891750, 11176704, 308756448000, 222304642560, 15084957888000, 234654900480000, 1267136462592000, 139385010885120000, 213723683357184000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS Table of n, a(n) for n=0..24. EXAMPLE b(4) = b'(9/3)+b'(8/3)+b'(5/3)+b'(0/3) = b(3)+[(1/3)b(2)+(2/3)b(3)]+[(1/3)b(1)+(2/3)b(2)]+b(0) = 65/6. CROSSREFS Cf. A071298, A071299, A071300. Sequence in context: A056839 A302033 A337643 * A145642 A056195 A083169 Adjacent sequences: A071298 A071299 A071300 * A071302 A071303 A071304 KEYWORD nonn,easy,frac AUTHOR Michele Dondi (blazar(AT)lcm.mi.infn.it), Jun 10 2002 EXTENSIONS More terms from David Wasserman, Nov 08 2005 Edited by N. J. A. Sloane, May 20 2019 STATUS approved

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Last modified June 2 10:58 EDT 2023. Contains 363097 sequences. (Running on oeis4.)