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.

A089904 Sum of digits of numbers between 0 and (2/9)*(10^n-1).

Table of values

n a(n)
0 0
1 3
2 109
3 2055
4 30501
5 404947
6 5049393
7 60493839
8 704938285
9 8049382731
10 90493827177
11 1004938271623
12 11049382716069
13 120493827160515
14 1304938271604961
15 14049382716049407
16 150493827160493853

List of values

[0, 3, 109, 2055, 30501, 404947, 5049393, 60493839, 704938285, 8049382731, 90493827177, 1004938271623, 11049382716069, 120493827160515, 1304938271604961, 14049382716049407, 150493827160493853]

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

Content is available under The OEIS End-User License Agreement.