A201854 - OEIS

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A201854

Primes of the form 7n^2 - 9.

2

19, 103, 439, 691, 1783, 2791, 4723, 5479, 7159, 10099, 17491, 18919, 21943, 23539, 28663, 32359, 40423, 47059, 59239, 61843, 67219, 69991, 75703, 78643, 84691, 97459, 104179, 114679, 125683, 137191, 153319, 192883, 202291, 207079

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

MATHEMATICA

Select[Table[7n^2-9, {n, 2, 1000}], PrimeQ]

PROG

(Magma) [a: n in [2..200] | IsPrime(a) where a is 7*n^2-9];

CROSSREFS

Sequence in context: A139948 A101010 A356126 * A195460 A195461 A096328

Adjacent sequences: A201851 A201852 A201853 * A201855 A201856 A201857

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 06 2011

STATUS

approved