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A034780
Numbers k such that
A034693
(k) = 4.
4
7, 13, 25, 27, 37, 43, 45, 49, 57, 67, 73, 79, 84, 87, 93, 97, 115, 127, 139, 142, 160, 163, 169, 175, 177, 193, 199, 205, 207, 213, 234, 235, 253, 255, 258, 265, 267, 277, 279, 295, 298
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OFFSET
1,1
LINKS
R. J. Mathar,
Table of n, a(n) for n = 1..656
MATHEMATICA
Position[#, 4] &@ Table[k = 1; While[! PrimeQ[k n + 1], k++]; k, {n, 300}] // Flatten (*
Michael De Vlieger
, Mar 02 2017 *)
CROSSREFS
Cf.
A034693
,
A034694
.
Sequence in context:
A090992
A259215
A215333
*
A137165
A087195
A255653
Adjacent sequences:
A034777
A034778
A034779
*
A034781
A034782
A034783
KEYWORD
nonn
AUTHOR
Labos Elemer
STATUS
approved
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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)