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A201257
Primes of the form 7n^3+9.
1
457, 3593, 56009, 384113, 681361, 1835017, 2201033, 3072841, 4770313, 7000009, 7874057, 14680073, 16842737, 30876617, 32020081, 38162441, 52706761, 61192721, 72521633, 160344137, 163755601, 170723009, 181540361, 185245153, 208537009
OFFSET
1,1
LINKS
MATHEMATICA
Select[Table[7n^3+9, {n, 0, 7000}], PrimeQ]
PROG
(Magma) [a: n in [0..500] | IsPrime(a) where a is 7*n^3+9]
CROSSREFS
Sequence in context: A020364 A337847 A093058 * A252400 A252399 A341186
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 29 2011
STATUS
approved