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.

A217119 Greatest number (in decimal representation) with n nonprime substrings in base-9 representation (substrings with leading zeros are considered to be nonprime).

Table of values

n a(n)
0 47
1 428
2 1721
3 6473
4 14033
5 35201
6 58961
7 58967
8 465743
9 530701
10 530710
11 1733741
12 4250788
13 4723108
14 4776398
15 25051529
16 37327196
17 42450640
18 42986860
19 42987589
20 42996409
21 225463817
22 382055767
23 382571822
24 386888308
25 386888419
26 387356789

List of values

[47, 428, 1721, 6473, 14033, 35201, 58961, 58967, 465743, 530701, 530710, 1733741, 4250788, 4723108, 4776398, 25051529, 37327196, 42450640, 42986860, 42987589, 42996409, 225463817, 382055767, 382571822, 386888308, 386888419, 387356789]

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

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