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.

A343960 Triangle read by rows: T(n,m) = Sum_{k=1..m} (k/n)*binomial(n,m-k)*binomial(n,m), n >= m >= 1.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 5
6 4
7 1
8 9
9 17
10 8
11 1
12 14
13 46
14 49
15 16
16 1
17 20
18 100
19 180
20 129
21 32
22 1
23 27
24 190
25 510
26 603
27 321
28 64
29 1
30 35
31 329
32 1225
33 2121
34 1827
35 769
36 128
37 1
38 44
39 532
40 2618
41 6202
42 7700
43 5164
44 1793
45 256
46 1
47 54
48 816
49 5124
50 15876
51 26628
52 25392
53 13878
54 4097
55 512

List of values

[1, 1, 2, 1, 5, 4, 1, 9, 17, 8, 1, 14, 46, 49, 16, 1, 20, 100, 180, 129, 32, 1, 27, 190, 510, 603, 321, 64, 1, 35, 329, 1225, 2121, 1827, 769, 128, 1, 44, 532, 2618, 6202, 7700, 5164, 1793, 256, 1, 54, 816, 5124, 15876, 26628, 25392, 13878, 4097, 512]