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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.

A214589 Number of nXnXn triangular 0..2 arrays with every horizontal row having the same average value.

Table of values

n a(n)
1 3
2 5
3 23
4 401
5 20351
6 2869211
7 1127599139
8 1248252244661
9 3918263795984603
10 35080215765450132755
11 899912775031092255512711
12 66403663756769266442027284403
13 14140062564030204365431731967633343

List of values

[3, 5, 23, 401, 20351, 2869211, 1127599139, 1248252244661, 3918263795984603, 35080215765450132755, 899912775031092255512711, 66403663756769266442027284403, 14140062564030204365431731967633343]

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

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