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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.

A208354 Number of compositions of n with at most one even part.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 7
5 13
6 23
7 41
8 72
9 126
10 219
11 379
12 653
13 1121
14 1918
15 3272
16 5567
17 9449
18 16003
19 27049
20 45636
21 76866
22 129267
23 217079
24 364057
25 609793
26 1020218
27 1705036
28 2846647
29 4748101
30 7912559
31 13174889
32 21919488
33 36440646
34 60538443
35 100503667
36 166744997
37 276476129

List of values

[1, 1, 2, 4, 7, 13, 23, 41, 72, 126, 219, 379, 653, 1121, 1918, 3272, 5567, 9449, 16003, 27049, 45636, 76866, 129267, 217079, 364057, 609793, 1020218, 1705036, 2846647, 4748101, 7912559, 13174889, 21919488, 36440646, 60538443, 100503667, 166744997, 276476129]

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

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