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.

A268105 Number of 2Xn 0..n 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 4
2 81
3 4096
4 378225
5 56791296
6 12650850576
7 3926389806144
8 1621309443347169
9 859957083064464100
10 569966660957291549809
11 461690884178405990127504
12 448823671401604409584451856
13 515728792901852626366779599104

List of values

[4, 81, 4096, 378225, 56791296, 12650850576, 3926389806144, 1621309443347169, 859957083064464100, 569966660957291549809, 461690884178405990127504, 448823671401604409584451856, 515728792901852626366779599104]

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

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