A174384 - OEIS

A174384

n such that n = product of 3 consecutive even numbers and n+-1 are primes.

192, 2688, 21840, 26880, 63840, 175392, 238080, 314160, 592368, 4573632, 9260160, 9527280, 13823040, 22424640, 27542400, 34010928, 35286240, 85182240, 103821120, 113377968, 150566640, 189116928, 220346448, 242968128, 257256912

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OFFSET

1,1

COMMENTS

4*6*8 = 192+-1 -> primes,..

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

f[n_]:=n*(n+2)*(n+4); Select[Table[f[n], {n, 0, 7!, 2}], PrimeQ[ #-1]&&PrimeQ[ #+1]&]

Select[Table[n(n+2)(n+4), {n, 0, 700, 2}], AllTrue[#+{1, -1}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Aug 18 2015 *)

CROSSREFS

Cf. A174383

Sequence in context: A183710 A183702 A351632 * A232919 A362738 A209594

Adjacent sequences: A174381 A174382 A174383 * A174385 A174386 A174387

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Mar 17 2010

EXTENSIONS

Definition clarified by Harvey P. Dale, Aug 18 2015

STATUS

approved