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A138691 Numbers of the form 68+p^2 (where p is a prime). 5

%I #11 Jul 08 2014 00:23:16

%S 72,77,93,117,189,237,357,429,597,909,1029,1437,1749,1917,2277,2877,

%T 3549,3789,4557,5109,5397,6309,6957,7989,9477,10269,10677,11517,11949,

%U 12837,16197,17229,18837,19389,22269,22869,24717,26637,27957,29997

%N Numbers of the form 68+p^2 (where p is a prime).

%C 68 + p^2 is divisible by 3 for any prime p > 3. - _M. F. Hasler_

%H Harvey P. Dale, <a href="/A138691/b138691.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[2*34 + Prime[p + 1]^2, {p, 0, 100}]

%t Prime[Range[50]]^2+68 (* _Harvey P. Dale_, Oct 19 2011 *)

%o (PARI) forprime(p=1, 1e2, print1(68+p^2, ", ")) \\ _Felix Fröhlich_, Jul 07 2014

%Y Cf. A138479, A138685, A138686, A138691, A138692, A138693, A138694, A007528, A138696, A138697, A138698, A138699, A138700.

%K nonn

%O 1,1

%A _Artur Jasinski_, Mar 26 2008

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)