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.

A241395 Number of nX5 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 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 8
2 44
3 201
4 1657
5 15339
6 160947
7 1622867
8 18627122
9 196990531
10 2356216195
11 25594964973
12 309860295135
13 3406115792732
14 41329346536802
15 457205784409075
16 5541954581513250
17 61567408955078580
18 744650178324042533

List of values

[8, 44, 201, 1657, 15339, 160947, 1622867, 18627122, 196990531, 2356216195, 25594964973, 309860295135, 3406115792732, 41329346536802, 457205784409075, 5541954581513250, 61567408955078580, 744650178324042533]

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

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