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.

A241252 Number of n X 5 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

n a(n)
1 10
2 12
3 71
4 446
5 3404
6 25190
7 225191
8 2057343
9 20539926
10 204332167
11 2101549932
12 21494785659
13 224464995283
14 2317825938537
15 24259559536660
16 251621814311194
17 2633451197372065
18 27369019127795259

List of values

[10, 12, 71, 446, 3404, 25190, 225191, 2057343, 20539926, 204332167, 2101549932, 21494785659, 224464995283, 2317825938537, 24259559536660, 251621814311194, 2633451197372065, 27369019127795259]