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.

A126505 Number of base 10 n-digit numbers with adjacent digits differing by four or less.

Table of values

n a(n)
0 1
1 10
2 70
3 510
4 3720
5 27142
6 198034
7 1444904
8 10542368
9 76919662
10 561224422
11 4094828862
12 29876859864
13 217988781808
14 1590498774316
15 11604663002012
16 84670422615182
17 617775842744470
18 4507441679052256
19 32887382581680414

List of values

[1, 10, 70, 510, 3720, 27142, 198034, 1444904, 10542368, 76919662, 561224422, 4094828862, 29876859864, 217988781808, 1590498774316, 11604663002012, 84670422615182, 617775842744470, 4507441679052256, 32887382581680414]

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

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