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.

A287826 Number of sequences over the alphabet {0,1,...,9} such that no two consecutive terms have distance 2.

Table of values

n a(n)
0 1
1 10
2 84
3 708
4 5968
5 50308
6 424080
7 3574860
8 30134944
9 254028100
10 2141377008
11 18051134892
12 152165391616
13 1282706408548
14 10812811724688
15 91148603152524
16 768354066287200
17 6476983198439812
18 54598931916359472
19 460251829451302764
20 3879778213203474880

List of values

[1, 10, 84, 708, 5968, 50308, 424080, 3574860, 30134944, 254028100, 2141377008, 18051134892, 152165391616, 1282706408548, 10812811724688, 91148603152524, 768354066287200, 6476983198439812, 54598931916359472, 460251829451302764, 3879778213203474880]

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

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