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.

A247094 Integers of the form (2^k + 1)/(2k + 1).

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 27
6 565
7 7085
8 48771
9 1266205
10 9099507
11 17602325
12 128207979
13 26494256091
14 11147523830125
15 84179432287299
16 165269711096165
17 281629680514649643
18 4246732448623781667
19 126774939137440139965
20 1925041114036033717685
21 14833445639443302757131

List of values

[1, 2, 3, 5, 27, 565, 7085, 48771, 1266205, 9099507, 17602325, 128207979, 26494256091, 11147523830125, 84179432287299, 165269711096165, 281629680514649643, 4246732448623781667, 126774939137440139965, 1925041114036033717685, 14833445639443302757131]

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

Content is available under The OEIS End-User License Agreement.