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.

A243119 Number of compositions of n in which the maximal multiplicity of parts equals 2.

Table of values

n a(n)
2 1
3 0
4 4
5 6
6 10
7 21
8 40
9 87
10 121
11 219
12 421
13 690
14 1159
15 1782
16 3304
17 5190
18 8212
19 12897
20 22084
21 33255
22 53617
23 82539
24 124849
25 206172
26 313339
27 472056
28 714976
29 1077996
30 1682806
31 2502645
32 3804460
33 5674305
34 8340535
35 12245241
36 18851899
37 27570366
38 40385431
39 59314572

List of values

[1, 0, 4, 6, 10, 21, 40, 87, 121, 219, 421, 690, 1159, 1782, 3304, 5190, 8212, 12897, 22084, 33255, 53617, 82539, 124849, 206172, 313339, 472056, 714976, 1077996, 1682806, 2502645, 3804460, 5674305, 8340535, 12245241, 18851899, 27570366, 40385431, 59314572]

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

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