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.

A233230 T(n,k)=Number of nXk 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

Table of values

n a(n)
1 1
2 2
3 2
4 6
5 14
6 6
7 23
8 174
9 174
10 23
11 99
12 2541
13 8231
14 2541
15 99
16 452
17 39203
18 420948
19 420948
20 39203
21 452
22 2136
23 616454
24 21895530
25 72049266
26 21895530
27 616454
28 2136
29 10313
30 9757236
31 1142726121
32 12389989684
33 12389989684
34 1142726121
35 9757236
36 10313

List of values

[1, 2, 2, 6, 14, 6, 23, 174, 174, 23, 99, 2541, 8231, 2541, 99, 452, 39203, 420948, 420948, 39203, 452, 2136, 616454, 21895530, 72049266, 21895530, 616454, 2136, 10313, 9757236, 1142726121, 12389989684, 12389989684, 1142726121, 9757236, 10313]