cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A322697 Eleven-column table read by rows: Primitive distinct 11-tuples that have the same value of phi, sigma, and tau.

Original entry on oeis.org

5701466232, 5806935288, 5824716000, 5863036500, 5940941280, 5978840580, 5980026420, 6376872150, 6520948434, 6566627430, 6726168150, 28249479864, 29028683320, 29045194360, 29849886456, 29850170376, 31778709534, 31888948266, 33524950602, 33528569646, 33543272334, 33644878554
Offset: 1

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Author

Jud McCranie, Dec 30 2018

Keywords

Comments

The terms are consecutive 11-tuples, ordered so that (A) a(11i-10) < a(11i-9) < ... < a(11i) for i > 0, and (B) a(11i+1) < a(11i+12) for i >= 0. This sequence has primitive solutions only. If k is relatively prime to all of the terms in a primitive 11-tuple, then multiplying the terms in that 11-tuple by k gives another solution - see A322687.

Examples

			5701466232, 5806935288, 5824716000, 5863036500, 5940941280, 5978840580, 5980026420, 6376872150, 6520948434, 6566627430, and 6726168150 have the same value of phi (1443225600), sigma (20473689600), and tau (384), so these eleven numbers are in the sequence.
		

Crossrefs

Extensions

More terms from Jud McCranie, Jan 13 2019