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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.

A238871 Number of weakly unimodal compositions of n with absolute difference of successive parts <= 1.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 6
5 10
6 14
7 21
8 27
9 40
10 52
11 70
12 92
13 124
14 156
15 206
16 264
17 335
18 425
19 539
20 673
21 847
22 1052
23 1300
24 1611
25 1990
26 2433
27 2977
28 3638
29 4420
30 5367
31 6496
32 7829
33 9439
34 11341
35 13590
36 16270
37 19425
38 23135
39 27525
40 32697
41 38745
42 45844
43 54168
44 63875
45 75247
46 88493
47 103892

List of values

[1, 1, 2, 4, 6, 10, 14, 21, 27, 40, 52, 70, 92, 124, 156, 206, 264, 335, 425, 539, 673, 847, 1052, 1300, 1611, 1990, 2433, 2977, 3638, 4420, 5367, 6496, 7829, 9439, 11341, 13590, 16270, 19425, 23135, 27525, 32697, 38745, 45844, 54168, 63875, 75247, 88493, 103892]

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

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