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.

A251971 Number of (n+1)X(5+1) 0..3 arrays with nondecreasing sum of every two consecutive values in every row and column.

Table of values

n a(n)
1 160000
2 12250000
3 937890625
4 29412250000
5 922368160000
6 16270574342400
7 287012931399936
8 3373866295640064
9 39660142577319936
10 344307200786841600
11 2989082761932960000
12 20503345475844000000
13 140640861824100000000

List of values

[160000, 12250000, 937890625, 29412250000, 922368160000, 16270574342400, 287012931399936, 3373866295640064, 39660142577319936, 344307200786841600, 2989082761932960000, 20503345475844000000, 140640861824100000000]

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

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