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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.

A156367 Triangle T(n, k) = binomial(n+k, 2*k)*k!, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 3
5 2
6 1
7 6
8 10
9 6
10 1
11 10
12 30
13 42
14 24
15 1
16 15
17 70
18 168
19 216
20 120
21 1
22 21
23 140
24 504
25 1080
26 1320
27 720
28 1
29 28
30 252
31 1260
32 3960
33 7920
34 9360
35 5040
36 1
37 36
38 420
39 2772
40 11880
41 34320
42 65520
43 75600
44 40320
45 1
46 45
47 660
48 5544
49 30888
50 120120
51 327600
52 604800
53 685440
54 362880

List of values

[1, 1, 1, 1, 3, 2, 1, 6, 10, 6, 1, 10, 30, 42, 24, 1, 15, 70, 168, 216, 120, 1, 21, 140, 504, 1080, 1320, 720, 1, 28, 252, 1260, 3960, 7920, 9360, 5040, 1, 36, 420, 2772, 11880, 34320, 65520, 75600, 40320, 1, 45, 660, 5544, 30888, 120120, 327600, 604800, 685440, 362880]

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

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