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.

A099328 Number of Catalan knight paths from (0,0) to (n,0) in the region between and on the lines y=0 and y=3. (See A096587 for the definition of Catalan knight.).

Table of values

n a(n)
1 1
2 0
3 1
4 0
5 2
6 2
7 8
8 8
9 21
10 28
11 69
12 108
13 226
14 370
15 736
16 1280
17 2473
18 4392
19 8281
20 14920
21 27874
22 50706
23 94088
24 171880
25 317693
26 582116
27 1073853
28 1970836
29 3630914
30 6669730
31 12279296
32 22568896
33 41533777
34 76360464
35 140493041
36 258344528
37 475256898

List of values

[1, 0, 1, 0, 2, 2, 8, 8, 21, 28, 69, 108, 226, 370, 736, 1280, 2473, 4392, 8281, 14920, 27874, 50706, 94088, 171880, 317693, 582116, 1073853, 1970836, 3630914, 6669730, 12279296, 22568896, 41533777, 76360464, 140493041, 258344528, 475256898]