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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.

A280671 Number of nX6 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 82
2 10893
3 1401470
4 183331502
5 23952262535
6 3130289979912
7 409089889172506
8 53463025958093933
9 6986960714513387194
10 913109939977637081743
11 119332252787740585439815
12 15595259598595853987150831

List of values

[82, 10893, 1401470, 183331502, 23952262535, 3130289979912, 409089889172506, 53463025958093933, 6986960714513387194, 913109939977637081743, 119332252787740585439815, 15595259598595853987150831]

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

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