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.

A172645 Number of n X n 0..2 arrays with row sums n and column sums n.

Table of values

n a(n)
1 1
2 3
3 31
4 2371
5 1084851
6 3680774301
7 91358224634433
8 17470072106054582211
9 26088526624958727703324771
10 310419652143758898175543447421953
11 29785621316391113552729016416250323294253

List of values

[1, 3, 31, 2371, 1084851, 3680774301, 91358224634433, 17470072106054582211, 26088526624958727703324771, 310419652143758898175543447421953, 29785621316391113552729016416250323294253]

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

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