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.

A230168 Primes of the form 45*2^n - 1.

Table of values

n a(n)
1 89
2 179
3 359
4 719
5 1439
6 2879
7 11519
8 23039
9 737279
10 1474559
11 2949119
12 188743679
13 12079595519
14 24159191039
15 3092376453119
16 6184752906239
17 810647932926689279
18 25940733853654056959
19 1740853180245066011576893439
20 445658414142736898963684720639

List of values

[89, 179, 359, 719, 1439, 2879, 11519, 23039, 737279, 1474559, 2949119, 188743679, 12079595519, 24159191039, 3092376453119, 6184752906239, 810647932926689279, 25940733853654056959, 1740853180245066011576893439, 445658414142736898963684720639]

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

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