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.

A239815 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

Table of values

n a(n)
1 24
2 729
3 18728
4 510748
5 13597573
6 366379173
7 9807771898
8 263419973152
9 7064275271994
10 189566431524540
11 5085635223031781
12 136450277248685119
13 3660861731265982119
14 98220442090411319757
15 2635213560025173917109

List of values

[24, 729, 18728, 510748, 13597573, 366379173, 9807771898, 263419973152, 7064275271994, 189566431524540, 5085635223031781, 136450277248685119, 3660861731265982119, 98220442090411319757, 2635213560025173917109]