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.

A349052 Number of weakly alternating compositions of n.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 16
6 28
7 52
8 91
9 161
10 280
11 491
12 850
13 1483
14 2573
15 4469
16 7757
17 13472
18 23378
19 40586
20 70438
21 122267
22 212210
23 368336
24 639296
25 1109620
26 1925916
27 3342755
28 5801880
29 10070133
30 17478330
31 30336518
32 52653939
33 91389518
34 158621355
35 275313226
36 477850887
37 829388075

List of values

[1, 1, 2, 4, 8, 16, 28, 52, 91, 161, 280, 491, 850, 1483, 2573, 4469, 7757, 13472, 23378, 40586, 70438, 122267, 212210, 368336, 639296, 1109620, 1925916, 3342755, 5801880, 10070133, 17478330, 30336518, 52653939, 91389518, 158621355, 275313226, 477850887, 829388075]

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

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