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

Author

Jeffrey Shallit, May 14 2016

Keywords

• nonn

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

Crossrefs

Cf. A000142.