A273068 Discriminator of the sequence n^n (A000312).

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

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 * A362532 A193846 A255908

Adjacent sequences: A273065 A273066 A273067 * A273069 A273070 A273071

Keyword

nonn

Author

Jeffrey Shallit, May 14 2016

Status

approved