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.

A349054 Number of alternating strict compositions of n. Number of alternating (up/down or down/up) permutations of strict integer partitions of n.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 3
5 5
6 9
7 11
8 15
9 21
10 35
11 41
12 59
13 75
14 103
15 155
16 193
17 255
18 339
19 443
20 569
21 841
22 1019
23 1365
24 1743
25 2295
26 2879
27 3785
28 5151
29 6417
30 8301
31 10625
32 13567
33 17229
34 21937
35 27509
36 37145
37 45425
38 58345
39 73071
40 93409
41 115797
42 147391
43 182151
44 229553
45 297061
46 365625

List of values

[1, 1, 1, 3, 3, 5, 9, 11, 15, 21, 35, 41, 59, 75, 103, 155, 193, 255, 339, 443, 569, 841, 1019, 1365, 1743, 2295, 2879, 3785, 5151, 6417, 8301, 10625, 13567, 17229, 21937, 27509, 37145, 45425, 58345, 73071, 93409, 115797, 147391, 182151, 229553, 297061, 365625]