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A233348 Numbers n such that 3*n+2 and 3*n-2 are both prime for n multiple of 5 (A008587). 0
5, 15, 35, 55, 65, 75, 105, 155, 205, 215, 225, 275, 285, 295, 365, 405, 435, 475, 495, 555, 565, 595, 625, 665, 695, 735, 765, 825, 895, 945, 985, 1055, 1085, 1115, 1155, 1205, 1225, 1265, 1315, 1335, 1385, 1505, 1595, 1605, 1645, 1745, 1805, 1835, 1885 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

FORMULA

Intersection of A008587 and A157834.

EXAMPLE

For n=15; 3*15+2=47 and 3*15-2=43.

MATHEMATICA

Select[5*Range[500], PrimeQ[3 # + 2] && PrimeQ[3 # - 2] &] (* T. D. Noe, Dec 09 2013 *)

PROG

(TI-BASIC) Clrio:5(sto)n:Lbl colorin:if isPrime(3n+2) and isPrime(3n-2) Then:Disp n:Pause: EndIf:n+5(sto)n:Goto colorin:EndPrgm

CROSSREFS

Cf. A157834 (n such that 3n-2 and 3n+2 are both prime).

Sequence in context: A072186 A051807 A034052 * A061829 A063382 A069983

Adjacent sequences:  A233345 A233346 A233347 * A233349 A233350 A233351

KEYWORD

nonn,less

AUTHOR

César Aguilera, Dec 07 2013

STATUS

approved

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Last modified August 3 22:03 EDT 2021. Contains 346441 sequences. (Running on oeis4.)