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.

A271668 Triangle read by rows. The first column is A000217(n+1). From the second row we apply - A002262(n) for the following terms of the row.

Table of values

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

List of values

[1, 3, 3, 6, 6, 5, 10, 10, 9, 7, 15, 15, 14, 12, 9, 21, 21, 20, 18, 15, 11, 28, 28, 27, 25, 22, 18, 13, 36, 36, 35, 33, 30, 26, 21, 15, 45, 45, 44, 42, 39, 35, 30, 24, 17, 55, 55, 54, 52, 49, 45, 40, 34, 27, 19, 66, 66, 65, 63, 60, 56, 51, 45, 38, 30, 21]

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

Content is available under The OEIS End-User License Agreement.