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A067366 Numbers n such that 1+C(n,floor(n/2)) is prime, where C(n,floor(n/2)) = A001405(n) is a central binomial coefficient. 1

%I #6 Jun 24 2014 01:08:20

%S 0,1,2,4,5,8,9,11,14,24,27,37,38,44,47,76,89,92,97,123,124,136,143,

%T 144,168,243,297,332,368,393,417,428,443,680,696,697,817,890,981,1034,

%U 1053,1201,1349,1384,1455,1537,1589,1634,1705,2077,2632,2635,2762,3197

%N Numbers n such that 1+C(n,floor(n/2)) is prime, where C(n,floor(n/2)) = A001405(n) is a central binomial coefficient.

%C The corresponding primes are in A066749.

%t For[ n=0, True, n++, If[ PrimeQ[ Binomial[ n, Floor[ n/2 ] ]+1 ], Print[ n ] ] ]

%Y Cf. A001405, A066749.

%K nonn

%O 1,3

%A _Dean Hickerson_, Jan 20 2002

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Last modified April 20 02:10 EDT 2024. Contains 371798 sequences. (Running on oeis4.)