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 A212557 Primes p such that (p, p-9) is an irregular pair. 1
 67, 877 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS No further terms found up to 163577833 in extended tables (see Buhler link). - Michel Marcus, Apr 17 2014 LINKS Joe Buhler and David Harvey, Irregular primes to 163 million, 2009. W. Johnson, Irregular primes and Cyclotomic Invariants, Math. Comp., 1975, Vol. 29, No. 129, pp. 113-120. PROG (PARI) is(n)=lift(Mod(numerator(bernfrac(n-9)), n)==0) forprime(p=8, , if(is(p), print1(p, ", "))) \\ Felix Fröhlich, Jan 19 2015 CROSSREFS Special instances of A000928. Variant of A088164 (for the terms of A088164, (p, p-3) is an irregular pair). Sequence in context: A106106 A093942 A166802 * A254640 A093267 A032651 Adjacent sequences:  A212554 A212555 A212556 * A212558 A212559 A212560 KEYWORD nonn,hard,bref,more AUTHOR Felix Fröhlich, May 21 2012 STATUS approved

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