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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.

A342342 Number of strict compositions of n with all adjacent parts (x, y) satisfying x <= 2y and y <= 2x.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 1
5 3
6 5
7 5
8 3
9 11
10 9
11 11
12 17
13 15
14 29
15 39
16 31
17 39
18 65
19 57
20 107
21 127
22 149
23 155
24 187
25 265
26 293
27 419
28 523
29 571
30 781
31 763
32 941
33 1371
34 1387
35 2125
36 2383
37 2775
38 3243
39 4189
40 4555
41 5349
42 7241
43 7997
44 10591
45 13171
46 14581
47 17213
48 20253
49 25177
50 27701
51 34317

List of values

[1, 1, 1, 3, 1, 3, 5, 5, 3, 11, 9, 11, 17, 15, 29, 39, 31, 39, 65, 57, 107, 127, 149, 155, 187, 265, 293, 419, 523, 571, 781, 763, 941, 1371, 1387, 2125, 2383, 2775, 3243, 4189, 4555, 5349, 7241, 7997, 10591, 13171, 14581, 17213, 20253, 25177, 27701, 34317]

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

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