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.

A347814 Number of walks on square lattice from (n,0) to (0,0) using steps that decrease the Euclidean distance to the origin and that change each coordinate by at most 1.

Table of values

n a(n)
0 1
1 1
2 7
3 29
4 173
5 937
6 5527
7 32309
8 193663
9 1166083
10 7093413
11 43373465
12 266712433
13 1646754449
14 10205571945
15 63442201565
16 395457341485
17 2470816812547
18 15469821698211
19 97035271087123
20 609662167537831
21 3836108862182671
22 24169777826484697
23 152468665277411533

List of values

[1, 1, 7, 29, 173, 937, 5527, 32309, 193663, 1166083, 7093413, 43373465, 266712433, 1646754449, 10205571945, 63442201565, 395457341485, 2470816812547, 15469821698211, 97035271087123, 609662167537831, 3836108862182671, 24169777826484697, 152468665277411533]