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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.

A057999 a(n) is smallest prime such that a(n)-1 is a proper multiple of a(n-1)-1, with a(0) = 2.

Table of values

n a(n)
0 2
1 3
2 5
3 13
4 37
5 73
6 433
7 1297
8 2593
9 10369
10 72577
11 508033
12 1524097
13 12192769
14 73156609
15 146313217
16 438939649
17 2633637889
18 23702740993
19 142216445953
20 1991030243329
21 37829574623233
22 416125320855553
23 1664501283422209
24 6658005133688833
25 126502097540087809
26 506008390160351233

List of values

[2, 3, 5, 13, 37, 73, 433, 1297, 2593, 10369, 72577, 508033, 1524097, 12192769, 73156609, 146313217, 438939649, 2633637889, 23702740993, 142216445953, 1991030243329, 37829574623233, 416125320855553, 1664501283422209, 6658005133688833, 126502097540087809, 506008390160351233]

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

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