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.

A111380 Smallest prime whose digital sum is equal to the n-th composite number not congruent to 0 (modulo 3).

Table of values

n a(n)
1 13
2 17
3 19
4 59
5 79
6 389
7 499
8 997
9 1889
10 1999
11 6899
12 17989
13 8999
14 39989
15 49999
16 98999
17 199999
18 598999
19 599999
20 799999
21 2998999
22 2999999
23 4999999
24 9899999
25 19999999
26 29999999
27 59999999
28 189997999
29 389999999
30 689899999
31 699899999
32 998999999

List of values

[13, 17, 19, 59, 79, 389, 499, 997, 1889, 1999, 6899, 17989, 8999, 39989, 49999, 98999, 199999, 598999, 599999, 799999, 2998999, 2999999, 4999999, 9899999, 19999999, 29999999, 59999999, 189997999, 389999999, 689899999, 699899999, 998999999]

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

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