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.

A207430 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.

Table of values

n a(n)
1 21
2 441
3 3633
4 29929
5 341329
6 3892729
7 39698733
8 404854641
9 4315250265
10 45995236225
11 481815567745
12 5047180107649
13 53243344229835
14 561670803164025
15 5908341620443125
16 62151175576890625
17 654538444302027625

List of values

[21, 441, 3633, 29929, 341329, 3892729, 39698733, 404854641, 4315250265, 45995236225, 481815567745, 5047180107649, 53243344229835, 561670803164025, 5908341620443125, 62151175576890625, 654538444302027625]

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

Content is available under The OEIS End-User License Agreement.