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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.

A030118 a(0) = 1, a(1) = 1, a(n) = a(n-1) - a(n-2) + n.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 6
5 7
6 7
7 7
8 8
9 10
10 12
11 13
12 13
13 13
14 14
15 16
16 18
17 19
18 19
19 19
20 20
21 22
22 24
23 25
24 25
25 25
26 26
27 28
28 30
29 31
30 31
31 31
32 32
33 34
34 36
35 37
36 37
37 37
38 38
39 40
40 42
41 43
42 43
43 43
44 44
45 46
46 48
47 49
48 49
49 49
50 50
51 52
52 54
53 55
54 55
55 55
56 56
57 58
58 60
59 61
60 61
61 61
62 62
63 64
64 66
65 67
66 67
67 67
68 68
69 70
70 72
71 73

List of values

[1, 1, 2, 4, 6, 7, 7, 7, 8, 10, 12, 13, 13, 13, 14, 16, 18, 19, 19, 19, 20, 22, 24, 25, 25, 25, 26, 28, 30, 31, 31, 31, 32, 34, 36, 37, 37, 37, 38, 40, 42, 43, 43, 43, 44, 46, 48, 49, 49, 49, 50, 52, 54, 55, 55, 55, 56, 58, 60, 61, 61, 61, 62, 64, 66, 67, 67, 67, 68, 70, 72, 73]

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

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