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.

A134857 Numbers that can be written as (a^2-1)(b^2-1) in four or more distinct ways.

Table of values

n a(n)
1 241920
2 1048320
3 10200960
4 25724160
5 37255680
6 93139200
7 123963840
8 245044800
9 588107520
10 819786240
11 1407893760
12 1871251200
13 3758169600
14 5886558720
15 8553283200
16 10783342080
17 13470367680
18 19769460480
19 30791819520
20 40446806400

List of values

[241920, 1048320, 10200960, 25724160, 37255680, 93139200, 123963840, 245044800, 588107520, 819786240, 1407893760, 1871251200, 3758169600, 5886558720, 8553283200, 10783342080, 13470367680, 19769460480, 30791819520, 40446806400]

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

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