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Search: id:A034602
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| A034602 |
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From Wolstenholme's theorem: (binomial(2p-1,p) - 1)/p^3, p prime >3. |
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18
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| 1, 5, 265, 2367, 237493, 2576561, 338350897, 616410400171, 7811559753873, 17236200860123055, 3081677433937346539, 41741941495866750557, 7829195555633964779233, 21066131970056662377432067
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OFFSET
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5,2
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COMMENT
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Equivalently, (binomial(2p,p)-2)/(2*p^3) where p runs through the primes >=5.
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REFERENCES
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R. K. Guy, Unsolved Problems in Number Theory, Sect. B31.
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EXAMPLE
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Binomial(10,5)-2 = 250; 5^3=125 hence a(5)=1
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CROSSREFS
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Sequence in context: A159954 A079681 A086656 this_sequence A113257 A140001 A153322
Adjacent sequences: A034599 A034600 A034601 this_sequence A034603 A034604 A034605
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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