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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.

A257023 Number of terms in the quarter-sum representation of n.

Table of values

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

List of values

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

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