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.

A242842 Number of compositions of n with difference 2 between the number of odd parts and the number of even parts, both counted without multiplicity.

Table of values

n a(n)
4 2
5 3
6 6
7 11
8 20
9 25
10 41
11 85
12 148
13 355
14 751
15 1701
16 3756
17 8255
18 17513
19 37038
20 76349
21 156618
22 317591
23 639142
24 1279302
25 2546711
26 5057675
27 10010975
28 19788607
29 39058684
30 77055159
31 151930328
32 299600229
33 590849561
34 1165782514
35 2301229945
36 4545782370
37 8985884632

List of values

[2, 3, 6, 11, 20, 25, 41, 85, 148, 355, 751, 1701, 3756, 8255, 17513, 37038, 76349, 156618, 317591, 639142, 1279302, 2546711, 5057675, 10010975, 19788607, 39058684, 77055159, 151930328, 299600229, 590849561, 1165782514, 2301229945, 4545782370, 8985884632]

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

Content is available under The OEIS End-User License Agreement.