A123076 - OEIS

A123076

Numbers n such that p=1+2n+3n^2+4n^3 is prime.

4, 12, 14, 18, 22, 24, 28, 34, 52, 62, 64, 78, 94, 104, 110, 118, 122, 132, 140, 144, 154, 158, 160, 178, 194, 204, 214, 218, 220, 234, 258, 262, 270, 272, 290, 294, 312, 314, 322, 344, 368, 370, 372, 382, 388, 424, 430, 440, 442, 454, 482, 494, 498, 518, 542

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

OFFSET

1,1

COMMENTS

Corresponding p's are 313, 7369, 11593, 24337, 44089, 57073, 90217, 160753, 570649, 964969, 1060993, 1916617, 3349033, 4532113, 5360521, 6614137, 7308289, 9252409, 11035081 A123059.

LINKS

Table of n, a(n) for n=1..55.

PROG

(PARI) lista(m) = {for (n=1, m, if (isprime(1 + 2*n + 3*n^2 + 4*n^3), print1(n, ", ")); ); } \\ Michel Marcus, Apr 19 2013

CROSSREFS

Cf. A056578, A123059.

Sequence in context: A052339 A310562 A358577 * A310563 A260257 A256706

Adjacent sequences: A123073 A123074 A123075 * A123077 A123078 A123079

KEYWORD

easy,nonn

AUTHOR

Zak Seidov, Sep 27 2006

STATUS

approved