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.

A334421 a(n) is the smallest number m with n divisors d such that sigma(d)/tau(d) is an integer for all divisors d.

Table of values

n a(n)
1 1
2 3
3 49
4 15
5 923521
6 147
7 88245939632761
8 105
9 8281
10 2770563
11 4345096786921664259621718196367601
12 735
13 9024585590445680759701490904755712009585829774768244676951841
14 264737818898283
15 45252529
16 1155

List of values

[1, 3, 49, 15, 923521, 147, 88245939632761, 105, 8281, 2770563, 4345096786921664259621718196367601, 735, 9024585590445680759701490904755712009585829774768244676951841, 264737818898283, 45252529, 1155]

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

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