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.

A267995 Number of n X 4 0..3 arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

Table of values

n a(n)
1 250
2 62500
3 15625000
4 3552627426
5 766970396055
6 158016399692284
7 31323853192497584
8 6008048043198865162
9 1120010376077692767415
10 203652957857164291693586
11 36224276466386619972386421
12 6318133327227578310005800855
13 1082746870173375929870886556128
14 182620177616634763310401464884566

List of values

[250, 62500, 15625000, 3552627426, 766970396055, 158016399692284, 31323853192497584, 6008048043198865162, 1120010376077692767415, 203652957857164291693586, 36224276466386619972386421, 6318133327227578310005800855, 1082746870173375929870886556128, 182620177616634763310401464884566]

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

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