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.

A250695 Number of (4+1)X(n+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 11736
2 76320
3 383440
4 1670016
5 6671458
6 25235016
7 92169818
8 329292956
9 1160994284
10 4064711976
11 14193722396
12 49590850136
13 173757950350
14 611608432408
15 2165540377158
16 7721145553812
17 27744881818344
18 100541208763000

List of values

[11736, 76320, 383440, 1670016, 6671458, 25235016, 92169818, 329292956, 1160994284, 4064711976, 14193722396, 49590850136, 173757950350, 611608432408, 2165540377158, 7721145553812, 27744881818344, 100541208763000]