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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.

A171174 Triangle read by rows in which row n lists A033627(n) together with the first 2n-1 numbers <> 0 of A038608.

Table of values

n a(n)
1 2
2 -1
3 4
4 -1
5 2
6 -3
7 7
8 -1
9 2
10 -3
11 4
12 -5
13 10
14 -1
15 2
16 -3
17 4
18 -5
19 6
20 -7
21 13
22 -1
23 2
24 -3
25 4
26 -5
27 6
28 -7
29 8
30 -9
31 16
32 -1
33 2
34 -3
35 4
36 -5
37 6
38 -7
39 8
40 -9
41 10
42 -11
43 19
44 -1
45 2
46 -3
47 4
48 -5
49 6
50 -7
51 8
52 -9
53 10
54 -11
55 12
56 -13
57 22
58 -1
59 2
60 -3
61 4
62 -5
63 6
64 -7
65 8
66 -9
67 10
68 -11
69 12
70 -13
71 14
72 -15
73 25
74 -1
75 2
76 -3
77 4

List of values

[2, -1, 4, -1, 2, -3, 7, -1, 2, -3, 4, -5, 10, -1, 2, -3, 4, -5, 6, -7, 13, -1, 2, -3, 4, -5, 6, -7, 8, -9, 16, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 19, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 22, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 14, -15, 25, -1, 2, -3, 4]

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

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