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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.

A275445 Sum of the asymmetry degrees of all compositions of n with parts in {1,2,3}.

Table of values

n a(n)
0 0
1 0
2 0
3 2
4 4
5 10
6 22
7 50
8 106
9 222
10 458
11 936
12 1890
13 3788
14 7540
15 14924
16 29388
17 57620
18 112540
19 219062
20 425112
21 822726
22 1588314
23 3059470
24 5881254
25 11284514
26 21614774
27 41336300
28 78936358
29 150533496
30 286708744
31 545428024
32 1036468344
33 1967555208
34 3731449176
35 7070218506
36 13384916364
37 25319020898
38 47857031870
39 90391975562
40 170614347714

List of values

[0, 0, 0, 2, 4, 10, 22, 50, 106, 222, 458, 936, 1890, 3788, 7540, 14924, 29388, 57620, 112540, 219062, 425112, 822726, 1588314, 3059470, 5881254, 11284514, 21614774, 41336300, 78936358, 150533496, 286708744, 545428024, 1036468344, 1967555208, 3731449176, 7070218506, 13384916364, 25319020898, 47857031870, 90391975562, 170614347714]

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

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