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A162893 Integers n such that the century defined by the interval [100n+1,100n+100] (i.e., the (n+1)-st century) contains exactly three Ormiston prime pairs and no other primes. 2
1057749, 2527374, 3850824, 4925140, 8318772, 8389776, 12195316, 15864637, 15876420, 16892233, 18032409, 19674784, 23413356, 23468604, 25331430, 27601386, 29421304, 30105598, 32702874, 39389043, 40515487, 43949157, 45468864 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Ormiston pairs must be of the form (100n+13,100n+31), (100n+37,100n+73), (100n+79,100n+97).
There cannot be more than three Ormiston prime pairs in a century.
LINKS
CROSSREFS
Proper subsequence of A162892.
Sequence in context: A253660 A253730 A043679 * A234089 A076247 A076248
KEYWORD
base,nonn
AUTHOR
Ray Chandler and Ki Punches, Jul 16 2009
STATUS
approved

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Last modified May 22 06:48 EDT 2024. Contains 372743 sequences. (Running on oeis4.)