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A051713
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Denominator of b(n)-b(n+1), where b(n) = n/((n+1)(n+2)) = A026741/A045896.
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4
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1, 60, 60, 70, 84, 504, 120, 990, 165, 572, 1092, 2730, 280, 4080, 2448, 1938, 855, 7980, 1540, 10626, 3036, 4600, 7800, 17550, 819, 21924, 12180, 8990, 7440, 32736, 5984, 39270, 5355, 15540, 25308, 54834, 4940, 63960, 34440
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..39.
M. Kaneko, The Akiyama-Tanigawa algorithm for Bernoulli numbers, J. Integer Sequences, 3 (2000), #00.2.9.
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EXAMPLE
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0, 1/60, 1/60, 1/70, 1/84, 5/504, 1/120, 7/990, 1/165, 3/572,...
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MATHEMATICA
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Denominator[#[[1]]-#[[2]]&/@(Partition[#[[1]]/(#[[2]]#[[3]])&/@Partition[ Range[50], 3, 1], 2, 1])] (* Harvey P. Dale, Nov 15 2014 *)
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CROSSREFS
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Cf. A051712. Row 3 of table in A051714/A051715.
Sequence in context: A060512 A060513 A283531 * A060225 A124901 A298688
Adjacent sequences: A051710 A051711 A051712 * A051714 A051715 A051716
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KEYWORD
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nonn,frac,easy
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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