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

1,2

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.

Links

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

Crossrefs

Cf. A000058.

Sequence in context: A278007 A081256 A084955 * A026472 A286176 A318401

Adjacent sequences: A273053 A273054 A273055 * A273057 A273058 A273059

Keyword

nonn

Author

Jeffrey Shallit, May 14 2016

Status

approved