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.

A133296 Smallest number whose sum of digits is 2n.

Table of values

n a(n)
0 0
1 2
2 4
3 6
4 8
5 19
6 39
7 59
8 79
9 99
10 299
11 499
12 699
13 899
14 1999
15 3999
16 5999
17 7999
18 9999
19 29999
20 49999
21 69999
22 89999
23 199999
24 399999
25 599999
26 799999
27 999999
28 2999999
29 4999999
30 6999999
31 8999999
32 19999999
33 39999999
34 59999999
35 79999999
36 99999999
37 299999999
38 499999999

List of values

[0, 2, 4, 6, 8, 19, 39, 59, 79, 99, 299, 499, 699, 899, 1999, 3999, 5999, 7999, 9999, 29999, 49999, 69999, 89999, 199999, 399999, 599999, 799999, 999999, 2999999, 4999999, 6999999, 8999999, 19999999, 39999999, 59999999, 79999999, 99999999, 299999999, 499999999]

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

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