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.

A168289 T(n,k) = 4*A046802(n+1,k+1) - 3*A007318(n,k), triangle read by rows (0 <= k <= n).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 6
5 1
6 1
7 19
8 19
9 1
10 1
11 48
12 114
13 48
14 1
15 1
16 109
17 494
18 494
19 109
20 1
21 1
22 234
23 1847
24 3472
25 1847
26 234
27 1
28 1
29 487
30 6381
31 20339
32 20339
33 6381
34 487
35 1
36 1
37 996
38 21040
39 107028
40 179506
41 107028
42 21040
43 996
44 1
45 1
46 2017
47 67360
48 524848
49 1377826
50 1377826
51 524848

List of values

[1, 1, 1, 1, 6, 1, 1, 19, 19, 1, 1, 48, 114, 48, 1, 1, 109, 494, 494, 109, 1, 1, 234, 1847, 3472, 1847, 234, 1, 1, 487, 6381, 20339, 20339, 6381, 487, 1, 1, 996, 21040, 107028, 179506, 107028, 21040, 996, 1, 1, 2017, 67360, 524848, 1377826, 1377826, 524848]