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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.

A350512 Triangle read by rows with T(n,0) = 1 for n >= 0 and T(n,k) = binomial(n-1,k-1)*(2*k*(n-k) + n)/k for 0 < k <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 4
5 1
6 1
7 7
8 7
9 1
10 1
11 10
12 18
13 10
14 1
15 1
16 13
17 34
18 34
19 13
20 1
21 1
22 16
23 55
24 80
25 55
26 16
27 1
28 1
29 19
30 81
31 155
32 155
33 81
34 19
35 1
36 1
37 22
38 112
39 266
40 350
41 266
42 112
43 22
44 1
45 1
46 25
47 148
48 420
49 686
50 686
51 420
52 148
53 25
54 1
55 1
56 28
57 189
58 624
59 1218
60 1512
61 1218
62 624
63 189
64 28
65 1

List of values

[1, 1, 1, 1, 4, 1, 1, 7, 7, 1, 1, 10, 18, 10, 1, 1, 13, 34, 34, 13, 1, 1, 16, 55, 80, 55, 16, 1, 1, 19, 81, 155, 155, 81, 19, 1, 1, 22, 112, 266, 350, 266, 112, 22, 1, 1, 25, 148, 420, 686, 686, 420, 148, 25, 1, 1, 28, 189, 624, 1218, 1512, 1218, 624, 189, 28, 1]