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.

A280675 Number of 3Xn 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 5
2 82
3 858
4 10205
5 119440
6 1401470
7 16438612
8 192831783
9 2261964301
10 26533504354
11 311245493388
12 3650998431229
13 42827250423319
14 502375841919309
15 5893011645334528
16 69126704336253119
17 810875921978239834

List of values

[5, 82, 858, 10205, 119440, 1401470, 16438612, 192831783, 2261964301, 26533504354, 311245493388, 3650998431229, 42827250423319, 502375841919309, 5893011645334528, 69126704336253119, 810875921978239834]

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

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