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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.

A230696 Triangle read by rows related to double factorial of odd numbers (A001147).

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 0
5 2
6 0
7 11
8 0
9 4
10 25
11 0
12 72
13 0
14 8
15 0
16 589
17 0
18 340
19 0
20 16
21 2025
22 0
23 7010
24 0
25 1328
26 0
27 32
28 0
29 75319
30 0
31 55160
32 0
33 4592
34 0
35 64
36 342225
37 0
38 1335328
39 0
40 334752
41 0
42 14592
43 0
44 128

List of values

[1, 0, 1, 1, 0, 2, 0, 11, 0, 4, 25, 0, 72, 0, 8, 0, 589, 0, 340, 0, 16, 2025, 0, 7010, 0, 1328, 0, 32, 0, 75319, 0, 55160, 0, 4592, 0, 64, 342225, 0, 1335328, 0, 334752, 0, 14592, 0, 128]

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

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