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A067315 Central binomial coefficient C(n, n/2) is not divisible by n. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..63.

MATHEMATICA

Select[ Range[ 2, 150, 2 ], Mod[ Binomial[ #, #/2 ], # ]>0& ]

CROSSREFS

Cf. A001405, A042996, A067348.

Sequence in context: A087270 A316262 A075124 * A069148 A328144 A327888

Adjacent sequences:  A067312 A067313 A067314 * A067316 A067317 A067318

KEYWORD

nonn

AUTHOR

Labos Elemer, Jan 14 2002

STATUS

approved

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Last modified April 20 16:53 EDT 2021. Contains 343135 sequences. (Running on oeis4.)