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.

A366642 Lexicographically earliest sequence of distinct primes such that the sequence of ratios (number of divisors of n that are coprime to these primes)/(number of divisors of n) has an asymptotic mean 1/2.

Table of values

n a(n)
1 2
2 3
3 5
4 149
5 10771
6 16575407
7 39516855101743
8 60095055821549024117399447
9 96668175211190122501174866643973679330023904660323

List of values

[2, 3, 5, 149, 10771, 16575407, 39516855101743, 60095055821549024117399447, 96668175211190122501174866643973679330023904660323]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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