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.

A250672 Number of (n+1)X(4+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 22119
2 329226
3 4008211
4 41503790
5 379890972
6 3135539502
7 23739860017
8 167047195040
9 1103768366168
10 6905919873166
11 41196085958108
12 235655369716800
13 1298966090014725
14 6928230529332792
15 35884432642746405
16 181050004787559210

List of values

[22119, 329226, 4008211, 41503790, 379890972, 3135539502, 23739860017, 167047195040, 1103768366168, 6905919873166, 41196085958108, 235655369716800, 1298966090014725, 6928230529332792, 35884432642746405, 181050004787559210]