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.

A189449 T(n,k)=Number of nXk array permutations with each element moving zero or one space horizontally or diagonally.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 5
6 1
7 5
8 16
9 13
10 1
11 8
12 61
13 80
14 34
15 1
16 13
17 225
18 666
19 400
20 89
21 1
22 21
23 841
24 5080
25 7300
26 2000
27 233
28 1
29 34
30 3136
31 40106
32 118128
33 80282
34 10000
35 610
36 1
37 55
38 11705
39 313136
40 2008890
41 2735828
42 883049
43 50000
44 1597
45 1
46 89
47 43681
48 2455013
49 33735505
50 100047288

List of values

[1, 2, 1, 3, 5, 1, 5, 16, 13, 1, 8, 61, 80, 34, 1, 13, 225, 666, 400, 89, 1, 21, 841, 5080, 7300, 2000, 233, 1, 34, 3136, 40106, 118128, 80282, 10000, 610, 1, 55, 11705, 313136, 2008890, 2735828, 883049, 50000, 1597, 1, 89, 43681, 2455013, 33735505, 100047288]