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A064965 1000000n+1, 1000000n+3, 1000000n+7, 1000000n+9 are all primes. 0
14311, 14659, 23299, 40861, 43303, 46405, 62239, 67327, 77071, 94237, 102796, 115201, 120220, 134968, 138721, 152980, 252715, 260947, 272365, 274534, 285244, 298342, 304489, 305713, 311032, 318802, 324025, 325321, 338908, 343885, 352621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..31.

MATHEMATICA

Select[Range[10^6/2], PrimeQ[10^6# + 1] && PrimeQ[10^6# + 3] && PrimeQ[10^6# + 7] && PrimeQ[10^6# + 9] &]

Select[Range[400000], AllTrue[10^6*#+{1, 3, 7, 9}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Mar 11 2015 *)

CROSSREFS

Cf. A007811 and A064687.

Sequence in context: A233889 A115554 A106726 * A072890 A249314 A249207

Adjacent sequences:  A064962 A064963 A064964 * A064966 A064967 A064968

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Oct 29 2001

STATUS

approved

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Last modified September 24 06:13 EDT 2021. Contains 347623 sequences. (Running on oeis4.)