A175281 Numbers k such that 6k+1 is a term in A005471.

1, 2, 3, 6, 13, 16, 23, 27, 52, 58, 101, 118, 146, 156, 177, 188, 248, 261, 331, 426, 443, 552, 591, 716, 853, 926, 1248, 1336, 1427, 1521, 1553, 1651, 1752, 1963, 2148, 2502, 2543, 2753, 2883, 3016, 3061, 3152, 3338, 3433, 3481, 4083, 4241, 4511, 4566, 4846

Offset: 1

Author

Zak Seidov, Mar 20 2010

Keywords

• nonn

Examples

			k=1: 6k+1 = 7 = A005471(1).
k=2: 6k+1 = 13 = A005471(2).
k=3: 6k+1 = 19 = A005471(3).
k=6: 6k+1 = 37 = A005471(4).
		

Crossrefs

Cf. A005471 (primes of form k^2 + 3*k + 9).