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.

A283039 Number of n X 5 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element.

Table of values

n a(n)
1 5
2 256
3 5065
4 94368
5 1604067
6 26180826
7 414085368
8 6406597648
9 97480211225
10 1463896864692
11 21753273510360
12 320461563276470
13 4686814034042643
14 68124911104620870
15 984999389958209910
16 14176505420268232960
17 203212970311422645415
18 2902589960282552892838
19 41327736536350218694304

List of values

[5, 256, 5065, 94368, 1604067, 26180826, 414085368, 6406597648, 97480211225, 1463896864692, 21753273510360, 320461563276470, 4686814034042643, 68124911104620870, 984999389958209910, 14176505420268232960, 203212970311422645415, 2902589960282552892838, 41327736536350218694304]