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.

A072170 Square array T(n,k) (n >= 0, k >= 2) read by antidiagonals, where T(n,k) is the number of ways of writing n as Sum_{i>=0} c_i 2^i, c_i in {0,1,...,k-1}.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 1
9 1
10 1
11 1
12 2
13 1
14 1
15 1
16 3
17 2
18 2
19 1
20 1
21 1
22 2
23 3
24 2
25 2
26 1
27 1
28 1
29 3
30 3
31 4
32 2
33 2
34 1
35 1
36 1
37 1
38 4
39 3
40 4
41 2
42 2
43 1
44 1
45 1
46 4
47 4
48 5
49 4
50 4
51 2
52 2
53 1
54 1
55 1
56 3
57 5
58 4
59 5
60 4
61 4
62 2
63 2
64 1
65 1
66 1
67 5
68 5
69 8
70 5
71 6
72 4
73 4
74 2
75 2
76 1
77 1
78 1
79 2
80 6
81 6
82 8
83 5
84 6
85 4
86 4
87 2
88 2
89 1
90 1
91 1
92 5
93 6
94 9
95 8
96 9
97 6
98 6
99 4
100 4
101 2
102 2
103 1
104 1

List of values

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 3, 2, 2, 1, 1, 1, 2, 3, 2, 2, 1, 1, 1, 3, 3, 4, 2, 2, 1, 1, 1, 1, 4, 3, 4, 2, 2, 1, 1, 1, 4, 4, 5, 4, 4, 2, 2, 1, 1, 1, 3, 5, 4, 5, 4, 4, 2, 2, 1, 1, 1, 5, 5, 8, 5, 6, 4, 4, 2, 2, 1, 1, 1, 2, 6, 6, 8, 5, 6, 4, 4, 2, 2, 1, 1, 1, 5, 6, 9, 8, 9, 6, 6, 4, 4, 2, 2, 1, 1]