cp's OEIS Frontend

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.

A055246 At step number k >= 1 the 2^(k-1) open intervals that are erased from [0,1] in the Cantor middle-third set construction are I(k,n) = (a(n)/3^k, (1+a(n))/3^k), n=1..2^(k-1).

Table of values

n a(n)
1 1
2 7
3 19
4 25
5 55
6 61
7 73
8 79
9 163
10 169
11 181
12 187
13 217
14 223
15 235
16 241
17 487
18 493
19 505
20 511
21 541
22 547
23 559
24 565
25 649
26 655
27 667
28 673
29 703
30 709
31 721
32 727
33 1459
34 1465
35 1477
36 1483
37 1513
38 1519
39 1531
40 1537
41 1621
42 1627
43 1639
44 1645
45 1675
46 1681
47 1693
48 1699

List of values

[1, 7, 19, 25, 55, 61, 73, 79, 163, 169, 181, 187, 217, 223, 235, 241, 487, 493, 505, 511, 541, 547, 559, 565, 649, 655, 667, 673, 703, 709, 721, 727, 1459, 1465, 1477, 1483, 1513, 1519, 1531, 1537, 1621, 1627, 1639, 1645, 1675, 1681, 1693, 1699]