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.

A255374 Number of strings of n decimal digits that contain at least one string of exactly 4 consecutive "0" digits.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 1
5 18
6 261
7 3420
8 42300
9 503991
10 5849757
11 66595383
12 746925399
13 8278904070
14 90884885481
15 989800742916
16 10707460718526
17 115168484215116
18 1232617054343121
19 13135427089598511
20 139446180653268195
21 1475374347592901460
22 15562803326717545290

List of values

[0, 0, 0, 0, 1, 18, 261, 3420, 42300, 503991, 5849757, 66595383, 746925399, 8278904070, 90884885481, 989800742916, 10707460718526, 115168484215116, 1232617054343121, 13135427089598511, 139446180653268195, 1475374347592901460, 15562803326717545290]

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

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