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.

A374438 Triangle read by rows: T(n, k) = T(n - 1, k) + T(n - 2, k - 2), with initial values T(n, k) = k + 1 for k < 3.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 2
5 3
6 1
7 2
8 3
9 2
10 1
11 2
12 3
13 4
14 3
15 1
16 2
17 3
18 6
19 6
20 2
21 1
22 2
23 3
24 8
25 9
26 6
27 3
28 1
29 2
30 3
31 10
32 12
33 12
34 9
35 2
36 1
37 2
38 3
39 12
40 15
41 20
42 18
43 8
44 3
45 1
46 2
47 3
48 14
49 18
50 30
51 30
52 20
53 12
54 2
55 1
56 2
57 3
58 16
59 21
60 42
61 45
62 40
63 30
64 10
65 3
66 1
67 2
68 3
69 18
70 24
71 56
72 63
73 70
74 60
75 30
76 15
77 2

List of values

[1, 1, 2, 1, 2, 3, 1, 2, 3, 2, 1, 2, 3, 4, 3, 1, 2, 3, 6, 6, 2, 1, 2, 3, 8, 9, 6, 3, 1, 2, 3, 10, 12, 12, 9, 2, 1, 2, 3, 12, 15, 20, 18, 8, 3, 1, 2, 3, 14, 18, 30, 30, 20, 12, 2, 1, 2, 3, 16, 21, 42, 45, 40, 30, 10, 3, 1, 2, 3, 18, 24, 56, 63, 70, 60, 30, 15, 2]

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

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