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.

A114902 Number of compositions of {1,..,n} such that no two adjacent parts are of equal size (labeled Carlitz compositions).

Table of values

n a(n)
0 1
1 1
2 1
3 7
4 21
5 81
6 793
7 4929
8 33029
9 388537
10 3751311
11 37585989
12 523395777
13 6814401361
14 90789460427
15 1486639926417
16 24213653736389
17 403184436319401
18 7665459211898263
19 149067938821523349
20 2971265450045056871
21 64800464138121854877
22 1460876941168812354947

List of values

[1, 1, 1, 7, 21, 81, 793, 4929, 33029, 388537, 3751311, 37585989, 523395777, 6814401361, 90789460427, 1486639926417, 24213653736389, 403184436319401, 7665459211898263, 149067938821523349, 2971265450045056871, 64800464138121854877, 1460876941168812354947]

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

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