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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.

A132778 Triangle read by rows, n-1 terms of (2n - 1) followed by n.

Table of values

n a(n)
1 1
2 3
3 2
4 5
5 5
6 3
7 7
8 7
9 7
10 4
11 9
12 9
13 9
14 9
15 5
16 11
17 11
18 11
19 11
20 11
21 6
22 13
23 13
24 13
25 13
26 13
27 13
28 7
29 15
30 15
31 15
32 15
33 15
34 15
35 15
36 8
37 17
38 17
39 17
40 17
41 17
42 17
43 17
44 17
45 9
46 19
47 19
48 19
49 19
50 19
51 19
52 19
53 19
54 19
55 10
56 21
57 21
58 21
59 21
60 21
61 21
62 21
63 21
64 21
65 21
66 11
67 23
68 23
69 23
70 23
71 23
72 23
73 23
74 23
75 23
76 23
77 23
78 12

List of values

[1, 3, 2, 5, 5, 3, 7, 7, 7, 4, 9, 9, 9, 9, 5, 11, 11, 11, 11, 11, 6, 13, 13, 13, 13, 13, 13, 7, 15, 15, 15, 15, 15, 15, 15, 8, 17, 17, 17, 17, 17, 17, 17, 17, 9, 19, 19, 19, 19, 19, 19, 19, 19, 19, 10, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 11, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 12]

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

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