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.

A123097 Triangle read by rows: T(n,k) = binomial(n-2, k-1) + n*binomial(n-1, k-1), 1 <= k <= n, starting with T(1, 1) = 1.

Table of values

n a(n)
1 1
2 3
3 2
4 4
5 7
6 3
7 5
8 14
9 13
10 4
11 6
12 23
13 33
14 21
15 5
16 7
17 34
18 66
19 64
20 31
21 6
22 8
23 47
24 115
25 150
26 110
27 43
28 7
29 9
30 62
31 183
32 300
33 295
34 174
35 57
36 8
37 10
38 79
39 273
40 539
41 665
42 525
43 259
44 73
45 9
46 11
47 98
48 388
49 896
50 1330
51 1316
52 868
53 368
54 91
55 10
56 12
57 119
58 531
59 1404
60 2436
61 2898
62 2394
63 1356
64 504
65 111
66 11

List of values

[1, 3, 2, 4, 7, 3, 5, 14, 13, 4, 6, 23, 33, 21, 5, 7, 34, 66, 64, 31, 6, 8, 47, 115, 150, 110, 43, 7, 9, 62, 183, 300, 295, 174, 57, 8, 10, 79, 273, 539, 665, 525, 259, 73, 9, 11, 98, 388, 896, 1330, 1316, 868, 368, 91, 10, 12, 119, 531, 1404, 2436, 2898, 2394, 1356, 504, 111, 11]