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.

A264916 Number of n-ascent sequences of length n with no consecutive repeated letters.

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 110
5 1380
6 21931
7 422128
8 9544164
9 247924425
10 7276062838
11 238094692473
12 8595519551905
13 339369780700496
14 14547197878632067
15 672813893127964088
16 33396560680565891888
17 1770862858604836365591
18 99902715110909008145856
19 5974701996798223000294793

List of values

[1, 1, 2, 12, 110, 1380, 21931, 422128, 9544164, 247924425, 7276062838, 238094692473, 8595519551905, 339369780700496, 14547197878632067, 672813893127964088, 33396560680565891888, 1770862858604836365591, 99902715110909008145856, 5974701996798223000294793]

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

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