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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.

A216695 Number of compositions (ordered partitions) of n into at least 2 distinct positive parts.

Table of values

n a(n)
0 0
1 0
2 0
3 2
4 2
5 4
6 10
7 12
8 18
9 26
10 56
11 64
12 100
13 132
14 192
15 350
16 434
17 616
18 850
19 1176
20 1554
21 2750
22 3296
23 4756
24 6292
25 8760
26 11304
27 15602
28 24314
29 30460
30 41866
31 55740
32 74874
33 98042
34 130808
35 168424
36 257404
37 315972
38 431064
39 558326
40 751490
41 958264
42 1277866
43 1621272
44 2123586
45 3020630
46 3768440

List of values

[0, 0, 0, 2, 2, 4, 10, 12, 18, 26, 56, 64, 100, 132, 192, 350, 434, 616, 850, 1176, 1554, 2750, 3296, 4756, 6292, 8760, 11304, 15602, 24314, 30460, 41866, 55740, 74874, 98042, 130808, 168424, 257404, 315972, 431064, 558326, 751490, 958264, 1277866, 1621272, 2123586, 3020630, 3768440]

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

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