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.

A026386 Triangular array T read by rows: T(n,0) = T(n,n) = 1 for all n >= 0; T(n,k) = T(n-1,k-1) + T(n-1,k) for even n and k = 1..n-1; T(n,k) = T(n-1,k-1) + T(n-1,k) + T(n-2,k-1) for odd n and k = 1 ..n-1.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 4
8 4
9 1
10 1
11 5
12 8
13 5
14 1
15 1
16 7
17 17
18 17
19 7
20 1
21 1
22 8
23 24
24 34
25 24
26 8
27 1
28 1
29 10
30 39
31 75
32 75
33 39
34 10
35 1
36 1
37 11
38 49
39 114
40 150
41 114
42 49
43 11
44 1
45 1
46 13
47 70
48 202
49 339
50 339
51 202
52 70
53 13
54 1
55 1
56 14
57 83
58 272
59 541
60 678
61 541
62 272
63 83
64 14
65 1
66 1
67 16

List of values

[1, 1, 1, 1, 2, 1, 1, 4, 4, 1, 1, 5, 8, 5, 1, 1, 7, 17, 17, 7, 1, 1, 8, 24, 34, 24, 8, 1, 1, 10, 39, 75, 75, 39, 10, 1, 1, 11, 49, 114, 150, 114, 49, 11, 1, 1, 13, 70, 202, 339, 339, 202, 70, 13, 1, 1, 14, 83, 272, 541, 678, 541, 272, 83, 14, 1, 1, 16]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.