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.

A112459 Absolute value of coefficient of term [x^(n-3)] in characteristic polynomial of maximum matrix A of size n X n, where n >= 3. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n.

Table of values

n a(n)
3 3
4 23
5 98
6 308
7 798
8 1806
9 3696
10 6996
11 12441
12 21021
13 34034
14 53144
15 80444
16 118524
17 170544
18 240312
19 332367
20 452067

List of values

[3, 23, 98, 308, 798, 1806, 3696, 6996, 12441, 21021, 34034, 53144, 80444, 118524, 170544, 240312, 332367, 452067]

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

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