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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.

A096609 a(n)=number of Catalan knight paths in right half-plane from (0,0) to (n,0).

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 8
5 6
6 44
7 60
8 256
9 460
10 1582
11 3360
12 10324
13 24150
14 69652
15 172200
16 479728
17 1225308
18 3350972
19 8727312
20 23638174
21 62295420
22 167923252
23 445808220
24 1199180360
25 3198756132
26 8598547622
27 23009417080
28 61856381708
29 165897510350

List of values

[1, 0, 2, 0, 8, 6, 44, 60, 256, 460, 1582, 3360, 10324, 24150, 69652, 172200, 479728, 1225308, 3350972, 8727312, 23638174, 62295420, 167923252, 445808220, 1199180360, 3198756132, 8598547622, 23009417080, 61856381708, 165897510350]

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

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