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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.

A364527 Triangle read by rows giving the number of square arrays composed of the numbers from 1 to n^2, counted up to rotation and reflection, with heterogeneity k, i.e., number of k different sums of rows, columns or diagonals with 1 <= k <= 2*n+2 for n > 1.

Table of values

n a(n)
1 1
2 0
3 0
4 0
5 0
6 3
7 0
8 1
9 22
10 346
11 2060
12 7989
13 17160
14 14662
15 3120
16 880

List of values

[1, 0, 0, 0, 0, 3, 0, 1, 22, 346, 2060, 7989, 17160, 14662, 3120, 880]

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

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