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.

A048439 Take the first n numbers written in base 7, concatenate them, then convert from base 7 to base 10.

Table of values

n a(n)
1 1
2 9
3 66
4 466
5 3267
6 22875
7 1120882
8 54923226
9 2691238083
10 131870666077
11 6461662637784
12 316621469251428
13 15514451993319985
14 760208147672679279
15 37250199235961284686
16 1825259762562102949630
17 89437728365543044531887
18 4382448689911609182062481

List of values

[1, 9, 66, 466, 3267, 22875, 1120882, 54923226, 2691238083, 131870666077, 6461662637784, 316621469251428, 15514451993319985, 760208147672679279, 37250199235961284686, 1825259762562102949630, 89437728365543044531887, 4382448689911609182062481]

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

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