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.

A242841 Number of compositions of n with difference 1 between the number of odd parts and the number of even parts, both counted without multiplicity.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 2
6 8
7 14
8 45
9 99
10 230
11 451
12 953
13 1798
14 3503
15 6683
16 12693
17 24209
18 46155
19 89200
20 172767
21 338255
22 664453
23 1317945
24 2620363
25 5243700
26 10509348
27 21141700
28 42578221
29 85897588
30 173380086
31 350184780
32 707320136
33 1428681390
34 2885015407
35 5823971576

List of values

[1, 1, 2, 1, 2, 8, 14, 45, 99, 230, 451, 953, 1798, 3503, 6683, 12693, 24209, 46155, 89200, 172767, 338255, 664453, 1317945, 2620363, 5243700, 10509348, 21141700, 42578221, 85897588, 173380086, 350184780, 707320136, 1428681390, 2885015407, 5823971576]

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

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