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.

A265929 Number of 1 X n 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 5
2 25
3 92
4 340
5 1252
6 4616
7 17012
8 62696
9 231044
10 851496
11 3138100
12 11564952
13 42620580
14 157071768
15 578865076
16 2133318088
17 7862009732
18 28974227016
19 106780086132
20 393521606584
21 1450263256356
22 5344722135352
23 19697152196980

List of values

[5, 25, 92, 340, 1252, 4616, 17012, 62696, 231044, 851496, 3138100, 11564952, 42620580, 157071768, 578865076, 2133318088, 7862009732, 28974227016, 106780086132, 393521606584, 1450263256356, 5344722135352, 19697152196980]

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

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