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.

A084420 Least number k such that between k! and (k+1)! there are n powers of ten.

Table of values

n a(n)
1 3
2 14
3 103
4 1042
5 10158
6 100502
7 1000617
8 10006509
9 100019088
10 1000004377
11 10000170793
12 100000442970
13 1000001981666
14 10000005339905
15 100000018997256
16 1000000065392525
17 10000000201014294
18 100000000631520633
19 1000000001077349719
20 10000000005309690910

List of values

[3, 14, 103, 1042, 10158, 100502, 1000617, 10006509, 100019088, 1000004377, 10000170793, 100000442970, 1000001981666, 10000005339905, 100000018997256, 1000000065392525, 10000000201014294, 100000000631520633, 1000000001077349719, 10000000005309690910]

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

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