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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.

A087192 a(n) = ceiling(a(n-1)*4/3), with a(1) = 1.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 8
7 11
8 15
9 20
10 27
11 36
12 48
13 64
14 86
15 115
16 154
17 206
18 275
19 367
20 490
21 654
22 872
23 1163
24 1551
25 2068
26 2758
27 3678
28 4904
29 6539
30 8719
31 11626
32 15502
33 20670
34 27560
35 36747
36 48996
37 65328
38 87104
39 116139
40 154852
41 206470
42 275294
43 367059
44 489412
45 652550

List of values

[1, 2, 3, 4, 6, 8, 11, 15, 20, 27, 36, 48, 64, 86, 115, 154, 206, 275, 367, 490, 654, 872, 1163, 1551, 2068, 2758, 3678, 4904, 6539, 8719, 11626, 15502, 20670, 27560, 36747, 48996, 65328, 87104, 116139, 154852, 206470, 275294, 367059, 489412, 652550]

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

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