cp's OEIS Frontend

A152529 a(n) = (p(n)*p(n+2) - 3*p(n+1))/2, where p(n) is the n-th odd prime.

%I A152529 #4 Jul 28 2015 04:11:29
%S A152529 3,17,29,74,98,167,241,313,490,580,734,899,1069,1307,1528,1885,2065,
%T A152529 2339,2695,2911,3391,3892,4349,4844,5249,5453,5882,6752,7211,8503,
%U A152529 8899,9998,10271,11470,12071,12865,13849,14687,15388,16823
%N A152529 a(n) = (p(n)*p(n+2) - 3*p(n+1))/2, where p(n) is the n-th odd prime.
%F A152529 a(n) = A152528(n+1)/2.
%p A152529 A152529 := proc(n)
%p A152529     j := n+1 ;
%p A152529     ithprime(j)*ithprime(j+2)-3*ithprime(j+1) ;
%p A152529     %/2 ;
%p A152529 end proc: # _R. J. Mathar_, Jul 28 2015
%Y A152529 Cf. A065091, A111071, A152527, A152528, A152530, A152531, A152532.
%K A152529 easy,nonn
%O A152529 1,1
%A A152529 _Omar E. Pol_, Dec 06 2008