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.

A240288 Number of 5Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

n a(n)
1 7
2 114
3 1461
4 33183
5 484146
6 13490093
7 224906182
8 6988931041
9 124429466670
10 4051638112330
11 74018226541069
12 2452262844599318
13 45215487411950078
14 1507127744748116582
15 27877553829380592951
16 931147017328796104053

List of values

[7, 114, 1461, 33183, 484146, 13490093, 224906182, 6988931041, 124429466670, 4051638112330, 74018226541069, 2452262844599318, 45215487411950078, 1507127744748116582, 27877553829380592951, 931147017328796104053]