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.

A141617 Triangle read by rows: T(n, k) = binomial(n,k)*prime(k)*prime(n-k), for 1 <= k <= n-1, n >= 1, with T(0, 0) = 1, T(n, 0) = T(n, n) = prime(n).

Table of values

n a(n)
0 1
1 2
2 2
3 3
4 8
5 3
6 5
7 18
8 18
9 5
10 7
11 40
12 54
13 40
14 7
15 11
16 70
17 150
18 150
19 70
20 11
21 13
22 132
23 315
24 500
25 315
26 132
27 13
28 17
29 182
30 693
31 1225
32 1225
33 693
34 182
35 17
36 19
37 272
38 1092
39 3080
40 3430
41 3080
42 1092
43 272
44 19
45 23
46 342
47 1836
48 5460
49 9702
50 9702
51 5460
52 1836
53 342
54 23

List of values

[1, 2, 2, 3, 8, 3, 5, 18, 18, 5, 7, 40, 54, 40, 7, 11, 70, 150, 150, 70, 11, 13, 132, 315, 500, 315, 132, 13, 17, 182, 693, 1225, 1225, 693, 182, 17, 19, 272, 1092, 3080, 3430, 3080, 1092, 272, 19, 23, 342, 1836, 5460, 9702, 9702, 5460, 1836, 342, 23]