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.

A277838 Number of '8' digits in the set of all numbers from 0 to A014824(n) = Sum_{i=1..n} i*10^(n-i) = (0, 1, 12, 123, 1234, 12345, ...).

Table of values

n a(n)
0 0
1 0
2 1
3 22
4 343
5 4664
6 58985
7 713306
8 8367628
9 96021959
10 1083676380
11 12071331701
12 133058996022
13 1454046750343
14 15775035404664
15 170096033058985
16 1824417120713306
17 19478739108367627
18 207133070096021958
19 2194787491083676380
20 23182442812071331701

List of values

[0, 0, 1, 22, 343, 4664, 58985, 713306, 8367628, 96021959, 1083676380, 12071331701, 133058996022, 1454046750343, 15775035404664, 170096033058985, 1824417120713306, 19478739108367627, 207133070096021958, 2194787491083676380, 23182442812071331701]