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.

A144406 Rectangular array A read by upward antidiagonals: entry A(n,k) in row n and column k gives the number of compositions of k in which no part exceeds n, n>=1, k>=0.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 2
10 1
11 1
12 1
13 2
14 3
15 1
16 1
17 1
18 2
19 4
20 5
21 1
22 1
23 1
24 2
25 4
26 7
27 8
28 1
29 1
30 1
31 2
32 4
33 8
34 13
35 13
36 1
37 1
38 1
39 2
40 4
41 8
42 15
43 24
44 21
45 1
46 1
47 1
48 2
49 4
50 8
51 16
52 29
53 44
54 34
55 1
56 1
57 1
58 2
59 4
60 8
61 16
62 31
63 56
64 81
65 55
66 1
67 1
68 1
69 2
70 4
71 8
72 16
73 32
74 61
75 108
76 149
77 89
78 1
79 1
80 1
81 2
82 4
83 8
84 16
85 32
86 63
87 120
88 208
89 274
90 144
91 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 1, 1, 2, 4, 5, 1, 1, 1, 2, 4, 7, 8, 1, 1, 1, 2, 4, 8, 13, 13, 1, 1, 1, 2, 4, 8, 15, 24, 21, 1, 1, 1, 2, 4, 8, 16, 29, 44, 34, 1, 1, 1, 2, 4, 8, 16, 31, 56, 81, 55, 1, 1, 1, 2, 4, 8, 16, 32, 61, 108, 149, 89, 1, 1, 1, 2, 4, 8, 16, 32, 63, 120, 208, 274, 144, 1]