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.

A241432 Number of nX5 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

n a(n)
1 10
2 45
3 158
4 1563
5 7495
6 37148
7 218885
8 1059975
9 7257895
10 44141371
11 244603126
12 1599162188
13 8958092747
14 55332407751
15 336911717484
16 1937285923500
17 12085963190320
18 70661956336398
19 424547431732947
20 2581132242865135

List of values

[10, 45, 158, 1563, 7495, 37148, 218885, 1059975, 7257895, 44141371, 244603126, 1599162188, 8958092747, 55332407751, 336911717484, 1937285923500, 12085963190320, 70661956336398, 424547431732947, 2581132242865135]