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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.

A192368 Number of lattice paths from (0,0) to (n,n) using steps (1,0), (2,0), (0,2), (1,1).

Table of values

n a(n)
0 1
1 1
2 6
3 19
4 94
5 396
6 1870
7 8541
8 40284
9 189274
10 899260
11 4281168
12 20487156
13 98299384
14 473118174
15 2282322211
16 11034087438
17 53443135944
18 259283934816
19 1259795078566
20 6129223177272
21 29856164309124
22 145592506783224
23 710686739172096
24 3472285996766556
25 16979257639328076

List of values

[1, 1, 6, 19, 94, 396, 1870, 8541, 40284, 189274, 899260, 4281168, 20487156, 98299384, 473118174, 2282322211, 11034087438, 53443135944, 259283934816, 1259795078566, 6129223177272, 29856164309124, 145592506783224, 710686739172096, 3472285996766556, 16979257639328076]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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