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.

A076270 Numbers of the form (3^{mr}-1)/(3^r-1) for positive integers m, r.

Table of values

n a(n)
1 1
2 4
3 10
4 13
5 28
6 40
7 82
8 91
9 121
10 244
11 364
12 730
13 757
14 820
15 1093
16 2188
17 3280
18 6562
19 6643
20 7381
21 9841
22 19684
23 20440
24 29524
25 59050
26 59293
27 66430
28 88573
29 177148
30 265720
31 531442
32 532171
33 538084
34 551881
35 597871
36 797161
37 1594324
38 2391484
39 4782970
40 4785157
41 5380840

List of values

[1, 4, 10, 13, 28, 40, 82, 91, 121, 244, 364, 730, 757, 820, 1093, 2188, 3280, 6562, 6643, 7381, 9841, 19684, 20440, 29524, 59050, 59293, 66430, 88573, 177148, 265720, 531442, 532171, 538084, 551881, 597871, 797161, 1594324, 2391484, 4782970, 4785157, 5380840]