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.

A171563 The number of walks from (0,0,0,0) to (n,n,n,n) with steps that increment one to four coordinates and having the property that no two consecutive steps are orthogonal.

Table of values

n a(n)
0 1
1 1
2 183
3 12645
4 985035
5 81827267
6 7118644591
7 640769321689
8 59196873690319
9 5581678517756599
10 535018115452292125
11 51979823843828063203
12 5107397983259866484167
13 506660924932346216388835
14 50675683529411401757497171
15 5104747391125384906330663869

List of values

[1, 1, 183, 12645, 985035, 81827267, 7118644591, 640769321689, 59196873690319, 5581678517756599, 535018115452292125, 51979823843828063203, 5107397983259866484167, 506660924932346216388835, 50675683529411401757497171, 5104747391125384906330663869]