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.

A268104 Number of 1Xn 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 2
2 9
3 64
4 615
5 7536
6 112476
7 1981512
8 40265487
9 927338710
10 23873974553
11 679478391252
12 21185458961316
13 718142599280848
14 26296505423775240
15 1034431689380433024
16 43505385550994833263
17 1948060006167232265688

List of values

[2, 9, 64, 615, 7536, 112476, 1981512, 40265487, 927338710, 23873974553, 679478391252, 21185458961316, 718142599280848, 26296505423775240, 1034431689380433024, 43505385550994833263, 1948060006167232265688]

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

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