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.

A166962 Triangle T(n,k) read by rows: T(n,1) = T(n,n)=1, otherwise T(n,k) = (3n-3k+1)*T(n-1,k-1) + k*(3k-2)*T(n-1,k), 1<=k<=n.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 12
6 1
7 1
8 103
9 69
10 1
11 1
12 834
13 2170
14 316
15 1
16 1
17 6685
18 53910
19 27830
20 1329
21 1
22 1
23 53496
24 1219015
25 1652300
26 281195
27 5412
28 1
29 1
30 427987
31 26455251
32 81939195
33 34800675
34 2487917
35 21781
36 1
37 1
38 3423918
39 563692024
40 3700851816
41 3327253410

List of values

[1, 1, 1, 1, 12, 1, 1, 103, 69, 1, 1, 834, 2170, 316, 1, 1, 6685, 53910, 27830, 1329, 1, 1, 53496, 1219015, 1652300, 281195, 5412, 1, 1, 427987, 26455251, 81939195, 34800675, 2487917, 21781, 1, 1, 3423918, 563692024, 3700851816, 3327253410]