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A175281
Numbers k such that 6k+1 is a term in A005471.
4
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
1,2
EXAMPLE
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).
Sequence in context: A295324 A054049 A276690 * A364606 A244790 A111503
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 20 2010
STATUS
approved