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.

A341971 Irregular triangle read by rows in which row n lists the values in row n of A235791 whose indices are in row n of A341970; a number is signed when its index is even.

Table of values

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

List of values

[1, 2, 3, -1, 4, 5, -2, 6, 1, 7, -3, 8, 9, -4, 2, 10, -1, 11, -5, 12, 3, 13, -6, 14, -2, 15, -7, 4, 1, 16, 17, -8, 18, 5, -3, 19, -9, 20, 2, 21, -10, 6, -1, 22, -4, 23, -11, 24, 7, 25, -12, 3, 26, -5, 27, -13, 8, -2, 28, 1, 29, -14, 30, 9, -6, 4, 31, -15]

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

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