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.

A268245 Number of nX4 0..4 arrays with every repeated value in every row greater than or equal to, and every column greater than, the previous repeated value.

Table of values

n a(n)
1 615
2 378225
3 197555340
4 98956027822
5 46876747497685
6 21318913339752967
7 9353951527477140513
8 3981090561058373419699
9 1649936874871844695534398
10 668021353800373153394497970
11 264913936364845485109525894305

List of values

[615, 378225, 197555340, 98956027822, 46876747497685, 21318913339752967, 9353951527477140513, 3981090561058373419699, 1649936874871844695534398, 668021353800373153394497970, 264913936364845485109525894305]

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

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