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.

A050493 a(n) = sum of binary digits of n-th triangular number.

Table of values

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

List of values

[0, 1, 2, 2, 2, 4, 3, 3, 2, 4, 5, 2, 4, 5, 4, 4, 2, 4, 5, 6, 4, 6, 7, 3, 4, 4, 7, 6, 5, 6, 5, 5, 2, 4, 5, 6, 5, 8, 6, 4, 5, 7, 6, 6, 8, 4, 5, 4, 4, 5, 8, 6, 5, 7, 7, 3, 6, 7, 8, 7, 6, 7, 6, 6, 2, 4, 5, 6, 5, 8, 7, 8, 4, 6, 8, 5, 8, 9, 4, 5, 5, 8, 7, 8, 8, 7, 8, 8, 7, 8, 12, 5, 6, 5, 6, 5, 4, 5, 8, 7, 8]