A273056 Discriminator of Sylvester's sequence A000058.

1, 2, 3, 7, 13, 13, 17, 29, 31, 61, 61, 61, 61, 61, 61, 61, 61, 109, 109, 109, 109, 109, 109, 109, 109, 128, 128, 128, 128, 128, 128, 128, 128, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 256, 512, 512, 512, 512, 512

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 pairwise incongruent, modulo k.

Crossrefs

Cf. A000058.