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.

A266741 Number of words on {1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,...,n,n,n,n} avoiding the pattern 12345.

Table of values

n a(n)
0 1
1 1
2 70
3 34650
4 63063000
5 142951955371
6 389426248416626
7 1238402046254860022
8 4454056622413300252928
9 17668055644599543583018570
10 75867559322054514745288107364
11 347785237467609520037269752908904
12 1684035818793607129226446293560872032

List of values

[1, 1, 70, 34650, 63063000, 142951955371, 389426248416626, 1238402046254860022, 4454056622413300252928, 17668055644599543583018570, 75867559322054514745288107364, 347785237467609520037269752908904, 1684035818793607129226446293560872032]

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

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