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.

A383070 Number of n-digit positive integers where all pairs of consecutive digits have a difference of at least 2.

Table of values

n a(n)
1 9
2 64
3 463
4 3341
5 24125
6 174172
7 1257515
8 9079056
9 65549673
10 473259806
11 3416873920
12 24669378486
13 178109665460
14 1285928315349
15 9284233050564
16 67030939539430
17 483954553287069
18 3494088121160674
19 25226855944238001
20 182134576675940879
21 1314987650245129696

List of values

[9, 64, 463, 3341, 24125, 174172, 1257515, 9079056, 65549673, 473259806, 3416873920, 24669378486, 178109665460, 1285928315349, 9284233050564, 67030939539430, 483954553287069, 3494088121160674, 25226855944238001, 182134576675940879, 1314987650245129696]

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

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