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.

A383478 Number of lattice paths from (0,0) to (n,n) using steps (1,0),(2,0),(3,0),(0,1).

Table of values

n a(n)
0 1
1 2
2 9
3 44
4 220
5 1134
6 5950
7 31608
8 169488
9 915420
10 4972825
11 27141036
12 148711836
13 817516196
14 4506838380
15 24906188912
16 137933068572
17 765324011736
18 4253501563156
19 23675286219200
20 131955035141160
21 736347621539310
22 4113559552360230
23 23003228298637080

List of values

[1, 2, 9, 44, 220, 1134, 5950, 31608, 169488, 915420, 4972825, 27141036, 148711836, 817516196, 4506838380, 24906188912, 137933068572, 765324011736, 4253501563156, 23675286219200, 131955035141160, 736347621539310, 4113559552360230, 23003228298637080]