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.

A352281 Regular triangle read by rows, T(n,k) is the least integer m such that sigma(m)/m is greater than n + (k-1)/n.

Table of values

n a(n)
1 2
2 12
3 36
4 180
5 720
6 2520
7 27720
8 110880
9 720720
10 10810800
11 122522400
12 1396755360
13 6983776800
14 160626866400
15 4497552259200
16 130429015516800
17 2021649740510400
18 74801040398884800
19 3066842656354276800
20 263748468446467804800
21 18594267025475980238400

List of values

[2, 12, 36, 180, 720, 2520, 27720, 110880, 720720, 10810800, 122522400, 1396755360, 6983776800, 160626866400, 4497552259200, 130429015516800, 2021649740510400, 74801040398884800, 3066842656354276800, 263748468446467804800, 18594267025475980238400]

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

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