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A165981 Primes p which are equal to 2 plus the sum of three consecutive primes. 1

%I #10 Sep 13 2013 05:13:27

%S 17,43,61,73,271,313,331,373,397,409,521,691,733,751,773,859,1051,

%T 1063,1153,1171,1231,1459,1613,1669,1759,1823,1933,2053,2131,2473,

%U 2551,2707,2843,2917,2953,2999,3163,3221,3331,3371,3469,3517,3541,3583,3671,3719

%N Primes p which are equal to 2 plus the sum of three consecutive primes.

%H Vincenzo Librandi, <a href="/A165981/b165981.txt">Table of n, a(n) for n = 1..1000</a>

%e 17 is in the sequence because 2+3+5+7=17; 43=2+11+13+17; 271=2+83+89+97.

%t Select[Total[#] + 2 & / @Partition[Prime[Range[200]], 3, 1], PrimeQ] (* _Vincenzo Librandi_, Sep 13 2013 *)

%Y Cf. A034961. [_R. J. Mathar_, Oct 14 2009]

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Oct 03 2009

%E Edited by _N. J. A. Sloane_, Oct 04 2009

%E Terms from 313 to 773 inserted by _R. J. Mathar_, Oct 14 2009

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Last modified August 30 17:27 EDT 2024. Contains 375545 sequences. (Running on oeis4.)