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.

A322141 a(n) is also the sum of the even-indexed terms of the n-th row of the triangle A237591.

Table of values

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

List of values

[0, 0, 1, 1, 2, 1, 2, 2, 2, 3, 4, 3, 4, 5, 4, 4, 5, 5, 6, 5, 6, 7, 8, 7, 7, 8, 9, 8, 9, 8, 9, 9, 10, 11, 10, 10, 11, 12, 13, 12, 13, 12, 13, 14, 13, 14, 15, 14, 14, 14, 15, 16, 17, 16, 17, 16, 17, 18, 19, 18, 19, 20, 19, 19, 20, 19, 20, 21, 22, 21, 22, 20, 21]

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