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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.

A289755 Primes of the form k!9-1, where k!9 is the nonuple factorial number (A114806).

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 89
6 439
7 1609
8 4373
9 22679
10 5445439
11 152681759
12 17893715839
13 101636305971199
14 12652843234348799
15 266565181393279999
16 4929089879840974847999
17 16401565050020468398079999
18 2263415976902824638935039999
19 1692607074564424130419507199999

List of values

[2, 3, 5, 7, 89, 439, 1609, 4373, 22679, 5445439, 152681759, 17893715839, 101636305971199, 12652843234348799, 266565181393279999, 4929089879840974847999, 16401565050020468398079999, 2263415976902824638935039999, 1692607074564424130419507199999]

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

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