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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.

A321245 Non-isomorphic proper colorings of the 4 X 4 grid graph using at most n colors under rotational and reflectional symmetries.

Table of values

n a(n)
1 0
2 1
3 1155
4 759759
5 103786510
6 4767856260
7 107118740001
8 1465350136810
9 13956101513964
10 100946621623995
11 588405869207695
12 2882842751900001
13 12245455022841690
14 46164185630256694
15 157281327978056205
16 491245336843482180
17 1422828159652548376
18 3857444027819847045
19 9864873410828916699
20 23951146853875652515
21 55509091777214287590

List of values

[0, 1, 1155, 759759, 103786510, 4767856260, 107118740001, 1465350136810, 13956101513964, 100946621623995, 588405869207695, 2882842751900001, 12245455022841690, 46164185630256694, 157281327978056205, 491245336843482180, 1422828159652548376, 3857444027819847045, 9864873410828916699, 23951146853875652515, 55509091777214287590]

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

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