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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.

A053638 a(n) = ceiling(2^n/n).

Table of values

n a(n)
1 2
2 2
3 3
4 4
5 7
6 11
7 19
8 32
9 57
10 103
11 187
12 342
13 631
14 1171
15 2185
16 4096
17 7711
18 14564
19 27595
20 52429
21 99865
22 190651
23 364723
24 699051
25 1342178
26 2581111
27 4971027
28 9586981
29 18512791
30 35791395
31 69273667
32 134217728
33 260301049
34 505290271
35 981706811
36 1908874354
37 3714566311
38 7233629131

List of values

[2, 2, 3, 4, 7, 11, 19, 32, 57, 103, 187, 342, 631, 1171, 2185, 4096, 7711, 14564, 27595, 52429, 99865, 190651, 364723, 699051, 1342178, 2581111, 4971027, 9586981, 18512791, 35791395, 69273667, 134217728, 260301049, 505290271, 981706811, 1908874354, 3714566311, 7233629131]

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

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