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.

A240416 Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one 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 57
2 529
3 10749
4 148536
5 1765436
6 33373526
7 425530595
8 5897838681
9 95307517175
10 1211349848865
11 18418502466795
12 271271920530483
13 3640504188151747
14 55380807100830022
15 781519568000794121
16 10995455837187187873

List of values

[57, 529, 10749, 148536, 1765436, 33373526, 425530595, 5897838681, 95307517175, 1211349848865, 18418502466795, 271271920530483, 3640504188151747, 55380807100830022, 781519568000794121, 10995455837187187873]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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