%I #5 Oct 30 2024 10:27:37
%S 1,2,3,6,13,16,23,27,52,58,101,118,146,156,177,188,248,261,331,426,
%T 443,552,591,716,853,926,1248,1336,1427,1521,1553,1651,1752,1963,2148,
%U 2502,2543,2753,2883,3016,3061,3152,3338,3433,3481,4083,4241,4511,4566,4846
%N Numbers k such that 6k+1 is a term in A005471.
%e k=1: 6k+1 = 7 = A005471(1).
%e k=2: 6k+1 = 13 = A005471(2).
%e k=3: 6k+1 = 19 = A005471(3).
%e k=6: 6k+1 = 37 = A005471(4).
%Y Cf. A005471 (primes of form k^2 + 3*k + 9).
%K nonn
%O 1,2
%A _Zak Seidov_, Mar 20 2010