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.

A089049 Number of ways of writing n as a sum of exactly 4 powers of 2.

Table of values

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

List of values

[0, 0, 0, 0, 1, 1, 1, 2, 2, 1, 2, 2, 2, 2, 3, 1, 2, 1, 2, 2, 3, 2, 3, 1, 2, 2, 3, 1, 3, 1, 1, 0, 2, 1, 2, 2, 3, 2, 3, 1, 3, 2, 3, 1, 3, 1, 1, 0, 2, 2, 3, 1, 3, 1, 1, 0, 3, 1, 1, 0, 1, 0, 0, 0, 2, 1, 2, 2, 3, 2, 3, 1, 3, 2, 3, 1, 3, 1, 1, 0, 3, 2, 3, 1, 3, 1, 1, 0, 3, 1, 1, 0, 1, 0, 0, 0, 2, 2, 3, 1, 3, 1, 1, 0, 3]