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.

A242500 Number of compositions of n, where the difference between the number of odd parts and the number of even parts is 2.

Table of values

n a(n)
2 1
3 0
4 2
5 4
6 3
7 16
8 19
9 40
10 95
11 136
12 321
13 588
14 1057
15 2240
16 3998
17 7848
18 15339
19 28464
20 56143
21 106788
22 204083
23 396704
24 755052
25 1457456
26 2806531
27 5377112
28 10382243
29 19947252
30 38382957
31 73996576
32 142311198
33 274283168
34 528438319
35 1017784016
36 1962451118
37 3781912684

List of values

[1, 0, 2, 4, 3, 16, 19, 40, 95, 136, 321, 588, 1057, 2240, 3998, 7848, 15339, 28464, 56143, 106788, 204083, 396704, 755052, 1457456, 2806531, 5377112, 10382243, 19947252, 38382957, 73996576, 142311198, 274283168, 528438319, 1017784016, 1962451118, 3781912684]