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A119721 Numbers n such that 4*n^4 + 7 is prime. 0
0, 1, 2, 3, 4, 9, 16, 20, 22, 24, 27, 31, 33, 36, 37, 47, 58, 59, 60, 61, 68, 80, 90, 94, 95, 107, 117, 118, 124, 127, 128, 132, 134, 135, 136, 149, 152, 169, 172, 178, 183, 192, 195, 200, 207, 227, 229, 234, 237, 239, 240, 250, 257, 262, 269, 277, 278, 279, 292 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..59.

EXAMPLE

If n=95 then 4*n^4 + 7 = 325802507 (prime).

MATHEMATICA

Select[Range[0, 500], PrimeQ[4*#^4 + 7] &] (* Stefan Steinerberger, Jul 22 2006 *)

PROG

(PARI) is(n)=isprime(4*n^4+7) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Cf. A118660.

Sequence in context: A096781 A232055 A192818 * A098969 A235401 A281882

Adjacent sequences:  A119718 A119719 A119720 * A119722 A119723 A119724

KEYWORD

nonn,less,easy

AUTHOR

Parthasarathy Nambi, Jun 13 2006

EXTENSIONS

More terms from Stefan Steinerberger, Jul 22 2006

STATUS

approved

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Last modified October 18 17:13 EDT 2019. Contains 328186 sequences. (Running on oeis4.)