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.

A173119 Triangle T(n, k, q) = q*[n=2] + Sum_{j=0..5} q^j*binomial(n-2*j, k-j)*[n>2*j] with T(n,0) = T(n,n) = 1 for q = 3, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 5
5 1
6 1
7 6
8 6
9 1
10 1
11 7
12 12
13 7
14 1
15 1
16 8
17 28
18 28
19 8
20 1
21 1
22 9
23 36
24 56
25 36
26 9
27 1
28 1
29 10
30 45
31 119
32 119
33 45
34 10
35 1
36 1
37 11
38 55
39 164
40 238
41 164
42 55
43 11
44 1
45 1
46 12
47 66
48 219
49 483
50 483
51 219
52 66
53 12
54 1
55 1
56 13
57 78
58 285
59 702
60 966
61 702
62 285
63 78
64 13
65 1

List of values

[1, 1, 1, 1, 5, 1, 1, 6, 6, 1, 1, 7, 12, 7, 1, 1, 8, 28, 28, 8, 1, 1, 9, 36, 56, 36, 9, 1, 1, 10, 45, 119, 119, 45, 10, 1, 1, 11, 55, 164, 238, 164, 55, 11, 1, 1, 12, 66, 219, 483, 483, 219, 66, 12, 1, 1, 13, 78, 285, 702, 966, 702, 285, 78, 13, 1]