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.

A268028 Number of 4Xn 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

Table of values

n a(n)
1 63
2 3969
3 250047
4 13530274
5 687233742
6 32747526923
7 1486191908610
8 64725260937166
9 2722665554883854
10 111163751115106132
11 4422667685678114786
12 172002220213857351197
13 6556076286013521999466
14 245446300682062937711088

List of values

[63, 3969, 250047, 13530274, 687233742, 32747526923, 1486191908610, 64725260937166, 2722665554883854, 111163751115106132, 4422667685678114786, 172002220213857351197, 6556076286013521999466, 245446300682062937711088]

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

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