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.

A131819 A131818 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums starting from the right of A131818.

Table of values

n a(n)
1 1
2 4
3 2
4 8
5 5
6 3
7 13
8 9
9 7
10 4
11 19
12 14
13 12
14 9
15 5
16 26
17 20
18 18
19 15
20 11
21 6
22 34
23 27
24 25
25 22
26 18
27 13
28 7
29 43
30 35
31 33
32 30
33 26
34 21
35 15
36 8
37 53
38 44
39 42
40 39
41 35
42 30
43 24
44 17
45 9
46 64
47 54
48 52
49 49
50 45
51 40
52 34
53 27
54 19
55 10
56 76
57 65
58 63
59 60
60 56
61 51
62 45
63 38
64 30
65 21
66 11

List of values

[1, 4, 2, 8, 5, 3, 13, 9, 7, 4, 19, 14, 12, 9, 5, 26, 20, 18, 15, 11, 6, 34, 27, 25, 22, 18, 13, 7, 43, 35, 33, 30, 26, 21, 15, 8, 53, 44, 42, 39, 35, 30, 24, 17, 9, 64, 54, 52, 49, 45, 40, 34, 27, 19, 10, 76, 65, 63, 60, 56, 51, 45, 38, 30, 21, 11]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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