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.

A265933 Number of 5Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

Table of values

n a(n)
1 3125
2 851496
3 1671744
4 4044156
5 8821464
6 22093736
7 53801792
8 150157540
9 449755384
10 1236102500
11 3412322472
12 9360675328
13 28319517672
14 77705043076
15 219811992824
16 603529357560
17 1803987081984
18 4979509778764
19 14264973899296

List of values

[3125, 851496, 1671744, 4044156, 8821464, 22093736, 53801792, 150157540, 449755384, 1236102500, 3412322472, 9360675328, 28319517672, 77705043076, 219811992824, 603529357560, 1803987081984, 4979509778764, 14264973899296]

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

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