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%I #5 Aug 06 2015 05:13:28
%S 3,14,16,18,44,59,70,72,73,77,78,101,104,112,128,131,140,143,146,147,
%T 148,159,160,171,172,190,193,225,238,252,268,290,292,303,330,331,332,
%U 333,338,347,351,356,359,361,378,379,383,390,393,417,426
%N n-th index k such that p(k) + p(k+6) = p(k+2) + p(k+4).
%H R. J. Mathar, <a href="/A022890/b022890.txt">Table of n, a(n) for n = 1..501</a>
%K nonn
%O 1,1
%A _Clark Kimberling_