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A067315
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Numbers k such that binomial(k, floor(k/2)) is not divisible by k.
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4
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4, 6, 8, 10, 14, 16, 18, 20, 22, 24, 26, 28, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 86, 88, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 134, 136, 138, 140
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Select[ Range[ 2, 150, 2 ], Mod[ Binomial[ #, #/2 ], # ]>0& ]
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PROG
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(PARI) is(k) = binomial(k, k\2) % k > 0; \\ Amiram Eldar, Aug 24 2024
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CROSSREFS
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KEYWORD
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nonn,changed
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AUTHOR
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STATUS
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approved
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