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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.

A057732 Numbers k such that 2^k + 3 is prime.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 7
7 12
8 15
9 16
10 18
11 28
12 30
13 55
14 67
15 84
16 228
17 390
18 784
19 1110
20 1704
21 2008
22 2139
23 2191
24 2367
25 2370
26 4002
27 4060
28 4062
29 4552
30 5547
31 8739
32 17187
33 17220
34 17934
35 20724
36 22732
37 25927
38 31854
39 33028
40 35754
41 38244
42 39796
43 40347
44 55456
45 58312
46 122550
47 205962
48 235326
49 363120
50 479844
51 685578
52 742452
53 1213815
54 1434400
55 1594947
56 1875552
57 1940812
58 2205444

List of values

[1, 2, 3, 4, 6, 7, 12, 15, 16, 18, 28, 30, 55, 67, 84, 228, 390, 784, 1110, 1704, 2008, 2139, 2191, 2367, 2370, 4002, 4060, 4062, 4552, 5547, 8739, 17187, 17220, 17934, 20724, 22732, 25927, 31854, 33028, 35754, 38244, 39796, 40347, 55456, 58312, 122550, 205962, 235326, 363120, 479844, 685578, 742452, 1213815, 1434400, 1594947, 1875552, 1940812, 2205444]

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

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