%I #4 Dec 05 2013 19:55:36
%S 4,7,13,19,25,29,37,41,47,57,61,69,75,81,87,97,105,109,117,123,129,
%T 137,145,153,163,169,175,181,185,191,207,213,221,227,239,245,253,261,
%U 267,275,283,289,301,305,311,317,331,345,353,357,363,371,377,389,397,405
%N Pair the natural numbers such that the n-th pair is (k, k+p(n)) where k is the smallest number not occurring earlier and p(n) is the n-th prime. (1, 3), (2, 5), (4, 9), (6, 13), (7, 18), (8, 21), (10, 27), (11, 30), (12, 35), (14, 43), ... This is the sequence of the sum of the members of every pair.
%Y Cf. A075313, A075314, A075316.
%K nonn
%O 1,1
%A _Amarnath Murthy_, Sep 14 2002
%E More terms from _David Wasserman_, Jan 16 2005