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.

A230672 Number of n X 5 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

n a(n)
1 15
2 3387
3 340563
4 37034355
5 4022141121
6 436827078531
7 47444197636239
8 5152946201086569
9 559664961809994753
10 60785594007085980027
11 6601964808003397959249
12 717043900743978231419349

List of values

[15, 3387, 340563, 37034355, 4022141121, 436827078531, 47444197636239, 5152946201086569, 559664961809994753, 60785594007085980027, 6601964808003397959249, 717043900743978231419349]

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

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