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.

A194483 Number of ways to arrange 6 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 1
4 165
5 4135
6 47010
7 337860
8 1790472
9 7622340
10 27489825
11 87018360
12 247874770
13 647091588
14 1569661600
15 3576049620
16 7716906900
17 15881735580
18 31347485274
19 59618165895
20 109678780695
21 195827638105
22 340301983890
23 576974687080

List of values

[0, 0, 1, 165, 4135, 47010, 337860, 1790472, 7622340, 27489825, 87018360, 247874770, 647091588, 1569661600, 3576049620, 7716906900, 15881735580, 31347485274, 59618165895, 109678780695, 195827638105, 340301983890, 576974687080]

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

Content is available under The OEIS End-User License Agreement.