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A270798 Hyperartiads. 4
5281, 5591, 6211, 6271, 8581, 8861, 9011, 9661, 10391, 10691, 11621, 12011, 12911, 13451, 15901, 19001, 19801, 20521, 20921, 21481, 21701, 22901, 22921, 23371, 26141, 27241, 27481, 28001, 28711, 29131, 30971, 31321, 31511, 32341, 32381, 34211, 38261, 38611 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Artiads (A001583) for which 5 is a quintic residue. [Lehmer] - Eric M. Schmidt, Apr 01 2016

LINKS

Eric M. Schmidt, Table of n, a(n) for n = 1..1000

E. Lehmer, Artiads characterized, J. Math. Anal. Appl. 15 1966 118-131. Beware errors!

E. Lehmer, Artiads characterized, J. Math. Anal. Appl. 15 1966 118-131 [annotated and corrected scanned copy]

PROG

(Sage) def is_hyperartiad(n) : return n % 10 == 1 and is_prime(n) and 5.powermod((n-1)//5, n) == 1 and fibonacci((n-1)//5) % n == 0 # Eric M. Schmidt, Apr 01 2016

CROSSREFS

Cf. A001583.

Sequence in context: A265985 A234994 A223341 * A237002 A178027 A053397

Adjacent sequences:  A270795 A270796 A270797 * A270799 A270800 A270801

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Mar 31 2016

EXTENSIONS

Extended and corrected by Eric M. Schmidt, Apr 01 2016

STATUS

approved

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Last modified April 3 04:21 EDT 2020. Contains 333195 sequences. (Running on oeis4.)