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A201788
Primes of the form 5n^2 - 7.
1
13, 73, 173, 313, 1613, 1993, 3373, 4493, 5113, 6473, 7213, 7993, 13513, 19213, 21773, 25913, 33613, 36973, 38713, 40493, 46073, 49993, 58313, 60493, 67273, 71993, 74413, 76873, 95213, 115513, 131213, 154873, 172973, 176713, 204013
OFFSET
1,1
LINKS
MATHEMATICA
Select[Table[5n^2-7, {n, 2, 1000}], PrimeQ]
PROG
(Magma) [a: n in [2..400] | IsPrime(a) where a is 5*n^2-7];
CROSSREFS
Sequence in context: A138353 A097402 A255416 * A139873 A142787 A084218
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Dec 05 2011
STATUS
approved