A140607 - OEIS

%I #5 Mar 30 2012 18:52:52

%S 3,5,7,10,11,13,13,17,19,22,23,31,37,29,31,31,43,37,37,41,43,55,47,64,

%T 45,53,61,55,59,61,55,61,67,78,71,73,91,106,79,136,83,77,85,89,91,96,

%U 109,97,136,101,103,109,107,109,109,113,155,103,145,166,111,201,127,113

%N (A039649(2n+1)+A137576(n))/2.

%C If 2n+1 is a prime then a(n) = 2n+1.

%H Ray Chandler, <a href="/A140607/b140607.txt">Table of n, a(n) for n=1..10000</a>

%Y Cf. A039649, A137576, A000010, A000040, A140140, A138193, A138217, A138227, A138535, A138536, A138537, A138539, A140141, A140608, A138786, A140667.

%K nonn

%O 1,1

%A _Vladimir Shevelev_, May 18 2008

%E Extended by _Ray Chandler_, May 20 2008, May 24 2008