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.

A194484 Number of ways to arrange 7 indistinguishable points on an n X n X n triangular grid so that no four points are in the same row or diagonal.

Table of values

n a(n)
1 0
2 0
3 0
4 63
5 4080
6 83745
7 927471
8 6924357
9 39196161
10 180512640
11 708150465
12 2442836682
13 7582054194
14 21540941994
15 56763356130
16 140189208510
17 327211061058
18 726712057836
19 1544399756262
20 3155463833625
21 6223010262480
22 11886291766899

List of values

[0, 0, 0, 63, 4080, 83745, 927471, 6924357, 39196161, 180512640, 708150465, 2442836682, 7582054194, 21540941994, 56763356130, 140189208510, 327211061058, 726712057836, 1544399756262, 3155463833625, 6223010262480, 11886291766899]

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

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