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.

A102087 Column 1 of triangular matrix A102086, which shifts upward to exclude the main diagonal under matrix square.

Table of values

n a(n)
0 0
1 2
2 4
3 20
4 156
5 1664
6 22684
7 378572
8 7504640
9 172785512
10 4540756252
11 134330010172
12 4423176368332
13 160596613105384
14 6378859853838480
15 275308217428662672
16 12836003750434047344
17 643227594173121801096

List of values

[0, 2, 4, 20, 156, 1664, 22684, 378572, 7504640, 172785512, 4540756252, 134330010172, 4423176368332, 160596613105384, 6378859853838480, 275308217428662672, 12836003750434047344, 643227594173121801096]

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

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