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.

A111072 Write the digit string 0123456789, repeated infinitely many times. Then, starting from the first "0" digit at the left end, move to the right by one digit (to the "1"), then two digits (to the "3"), then three digits (to the "6"), four digits ("0"), five digits ("5"), and so on. Partial sums of the digits thus reached are 0, 1, 4, 10, 10, 15, ...

Table of values

n a(n)
0 0
1 1
2 4
3 10
4 10
5 15
6 16
7 24
8 30
9 35
10 40
11 46
12 54
13 55
14 60
15 60
16 66
17 69
18 70
19 70
20 70
21 71
22 74
23 80
24 80
25 85
26 86
27 94
28 100
29 105
30 110
31 116
32 124
33 125
34 130
35 130
36 136
37 139
38 140
39 140
40 140
41 141
42 144
43 150
44 150
45 155
46 156
47 164
48 170
49 175
50 180
51 186
52 194
53 195
54 200
55 200
56 206
57 209
58 210

List of values

[0, 1, 4, 10, 10, 15, 16, 24, 30, 35, 40, 46, 54, 55, 60, 60, 66, 69, 70, 70, 70, 71, 74, 80, 80, 85, 86, 94, 100, 105, 110, 116, 124, 125, 130, 130, 136, 139, 140, 140, 140, 141, 144, 150, 150, 155, 156, 164, 170, 175, 180, 186, 194, 195, 200, 200, 206, 209, 210]

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

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