A273064 Discriminator of the factorials A000142.

1, 2, 3, 7, 10, 13, 13, 13, 31, 37, 37, 37, 61, 61, 61, 83, 83, 83, 127, 127, 127, 127, 127, 179, 179, 179, 179, 179, 193, 193, 193, 193, 193, 193, 193, 193, 277, 277, 277, 277, 277, 277, 383, 383, 383, 383, 383, 479, 479, 479, 479, 479, 479, 479, 541, 541, 541, 541, 541, 541, 541, 541, 541, 641, 641, 641, 641, 641, 641, 641

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 incongruent, modulo k.

Here we take the factorials starting with 1! = 1.

Differs from A208494 only at n=1. - R. J. Mathar, May 15 2016

Links

Table of n, a(n) for n=1..70.

Crossrefs

Cf. A000142.

Sequence in context: A285550 A171863 A101956 * A341238 A002238 A002255

Adjacent sequences: A273061 A273062 A273063 * A273065 A273066 A273067

Keyword

nonn

Author

Jeffrey Shallit, May 14 2016

Status

approved