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.

A142175 Triangle read by rows: T(n,k) = (1/4)*(A007318(n,k) - 6*A008292(n+1,k+1) + 9*A060187(n+1,k+1)).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 8
5 1
6 1
7 36
8 36
9 1
10 1
11 133
12 420
13 133
14 1
15 1
16 449
17 3334
18 3334
19 449
20 1
21 1
22 1446
23 21939
24 49364
25 21939
26 1446
27 1
28 1
29 4534
30 130044
31 560957
32 560957
33 130044
34 4534
35 1
36 1
37 13991
38 724222
39 5459561
40 10284514
41 5459561
42 724222
43 13991
44 1
45 1
46 42747
47 3880014
48 48160170
49 154214412
50 154214412
51 48160170
52 3880014
53 42747
54 1

List of values

[1, 1, 1, 1, 8, 1, 1, 36, 36, 1, 1, 133, 420, 133, 1, 1, 449, 3334, 3334, 449, 1, 1, 1446, 21939, 49364, 21939, 1446, 1, 1, 4534, 130044, 560957, 560957, 130044, 4534, 1, 1, 13991, 724222, 5459561, 10284514, 5459561, 724222, 13991, 1, 1, 42747, 3880014, 48160170, 154214412, 154214412, 48160170, 3880014, 42747, 1]