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.

A267793 Number of 7Xn 0..1 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 20
2 400
3 8000
4 102954
5 1234716
6 13126812
7 132388406
8 1271314080
9 11831791048
10 107394660068
11 957081246026
12 8408442934462
13 73058790472446
14 629272663467509
15 5382292144211926
16 45776729662954256
17 387532677732355814

List of values

[20, 400, 8000, 102954, 1234716, 13126812, 132388406, 1271314080, 11831791048, 107394660068, 957081246026, 8408442934462, 73058790472446, 629272663467509, 5382292144211926, 45776729662954256, 387532677732355814]

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

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