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A285987 a(n)=least number that is cyclops for exactly n distinct bases b > 1. 1
1, 5, 19, 51, 197, 901, 2038, 5839, 13476, 18517, 36993, 60544, 60557, 60555, 60553, 705691, 705758, 2528254, 4762881, 5645512, 5645535, 20250250, 20250249, 26733097, 66978018, 66978001, 66978016, 66978065, 66978193, 133956385, 187142781, 589907497, 1018886425 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

A134808 gives the definition of cyclops numbers for base 10; we can naturally generalize this notion for any base b > 1.

This sequence is not strictly increasing; for example: a(12) = 60557 > a(13) = 60555 > a(14) = 60553.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 0..35

Rémy Sigrist, Illustration of the first terms

Rémy Sigrist, C program for A285987

CROSSREFS

Cf. A134808.

Sequence in context: A100104 A015650 A200764 * A055365 A209817 A281156

Adjacent sequences:  A285984 A285985 A285986 * A285988 A285989 A285990

KEYWORD

nonn,base

AUTHOR

Rémy Sigrist, Apr 30 2017

STATUS

approved

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Last modified August 6 14:45 EDT 2020. Contains 336247 sequences. (Running on oeis4.)