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A064978 n*10^4-1, n*10^4-3, n*10^4-7 and n*10^4-9 are all prime. 0
1856, 13301, 14003, 15545, 21155, 21593, 24851, 27557, 37952, 40013, 44906, 48515, 53294, 53891, 59162, 62282, 62798, 65714, 71900, 72560, 74093, 77915, 79910, 80426, 83252, 91421, 99632, 112829, 118364, 121367, 136025, 138848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

MATHEMATICA

Select[ Range[200000], PrimeQ[10^4# - 1] && PrimeQ[10^4# - 3] && PrimeQ[10^4# - 7] && PrimeQ[10^4# - 9] &]

CROSSREFS

Sequence in context: A023044 A243236 A051355 * A202913 A159212 A120809

Adjacent sequences:  A064975 A064976 A064977 * A064979 A064980 A064981

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v, Oct 30 2001

STATUS

approved

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Last modified September 24 18:55 EDT 2022. Contains 356949 sequences. (Running on oeis4.)