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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.

A077509 a(n) = (n+1)*10^d - A077508(n) where d = n - number of digits in n.

Table of values

n a(n)
2 1
3 3
4 1
5 1
6 33
7 7
8 1
9 63
10 3
11 17
12 51
13 51
14 19
15 3
16 33
17 61
18 59
19 91
20 1
21 119
22 31
23 73
24 59
25 103
26 11
27 41
28 13
29 37
30 11
31 7
32 13
33 141
34 43
35 53
36 23
37 3
38 223
39 17
40 21
41 379
42 17
43 91
44 169
45 27
46 61
47 107
48 141
49 273
50 131
51 77
52 93
53 119
54 23
55 171
56 47
57 51
58 183
59 11
60 381
61 73
62 13
63 21
64 133
65 19
66 119
67 567
68 383
69 83

List of values

[1, 3, 1, 1, 33, 7, 1, 63, 3, 17, 51, 51, 19, 3, 33, 61, 59, 91, 1, 119, 31, 73, 59, 103, 11, 41, 13, 37, 11, 7, 13, 141, 43, 53, 23, 3, 223, 17, 21, 379, 17, 91, 169, 27, 61, 107, 141, 273, 131, 77, 93, 119, 23, 171, 47, 51, 183, 11, 381, 73, 13, 21, 133, 19, 119, 567, 383, 83]

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

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