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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.

A072038 Column of Zorach additive triangle in which n appears (or 0 in the unlikely event that it does not).

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 1
6 2
7 1
8 1
9 3
10 1
11 2
12 2
13 2
14 1
15 1
16 1
17 3
18 2
19 1
20 1
21 1
22 1
23 3
24 2
25 3
26 4
27 1
28 1
29 2
30 1
31 3
32 1
33 1
34 2
35 2
36 2
37 1
38 1
39 1
40 4
41 2
42 3
43 2
44 1
45 1
46 1
47 1
48 4
49 2
50 1
51 1
52 1
53 3
54 1
55 1
56 4
57 2
58 2
59 1
60 1
61 2
62 1
63 3
64 1
65 2
66 5
67 1
68 1
69 3
70 2
71 3
72 1
73 4
74 1
75 2
76 2
77 3
78 1
79 1
80 1
81 1
82 1
83 2
84 3
85 1
86 1
87 1
88 5
89 2
90 1
91 1
92 3
93 2
94 1
95 4
96 2
97 2
98 1
99 1
100 1
101 2
102 1
103 1
104 5
105 1

List of values

[1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 2, 2, 2, 1, 1, 1, 3, 2, 1, 1, 1, 1, 3, 2, 3, 4, 1, 1, 2, 1, 3, 1, 1, 2, 2, 2, 1, 1, 1, 4, 2, 3, 2, 1, 1, 1, 1, 4, 2, 1, 1, 1, 3, 1, 1, 4, 2, 2, 1, 1, 2, 1, 3, 1, 2, 5, 1, 1, 3, 2, 3, 1, 4, 1, 2, 2, 3, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 5, 2, 1, 1, 3, 2, 1, 4, 2, 2, 1, 1, 1, 2, 1, 1, 5, 1]