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A273068 Discriminator of the sequence n^n (A000312). 1
1, 2, 4, 8, 8, 24, 24, 38, 47, 62, 62, 83, 83, 83, 83, 83, 83, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134, 134, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 439, 439, 439, 439, 439, 439, 587, 587, 607, 607, 607, 681, 681, 681, 681, 1069, 1069, 1097, 1097, 1097, 1097, 1097, 1097, 1174 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The discriminator of a sequence is the least positive integer k such that the first n terms of the sequence are pairwise incongruent, modulo k.

We start A000312 with 1^1 = 1 (and not 0^0).

LINKS

Table of n, a(n) for n=1..68.

CROSSREFS

Cf. A000312.

Sequence in context: A334284 A193850 A140119 * A193846 A255908 A341107

Adjacent sequences:  A273065 A273066 A273067 * A273069 A273070 A273071

KEYWORD

nonn

AUTHOR

Jeffrey Shallit, May 14 2016

STATUS

approved

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Last modified July 29 13:28 EDT 2021. Contains 346346 sequences. (Running on oeis4.)