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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.

A379644 Smallest primitive prime factor of 11^n-1.

Table of values

n a(n)
1 2
2 3
3 7
4 61
5 3221
6 37
7 43
8 7321
9 1772893
10 13421
11 15797
12 13
13 1093
14 1623931
15 195019441
16 17
17 50544702849929377
18 590077
19 6115909044841454629
20 212601841
21 1723
22 23
23 829
24 10657
25 3001
26 53
27 5559917315850179173
28 29
29 523
30 31
31 50159
32 51329
33 661
34 71707
35 211
36 3138426605161

List of values

[2, 3, 7, 61, 3221, 37, 43, 7321, 1772893, 13421, 15797, 13, 1093, 1623931, 195019441, 17, 50544702849929377, 590077, 6115909044841454629, 212601841, 1723, 23, 829, 10657, 3001, 53, 5559917315850179173, 29, 523, 31, 50159, 51329, 661, 71707, 211, 3138426605161]

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

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