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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.

A237116 Larger prime factor of the smallest semiprime of the form k^prime(n)+1, or 0 if no such semiprime exists.

Table of values

n a(n)
1 5
2 3
3 11
4 43
5 683
6 2731
7 43691
8 174763
9 2796203
10 30700509570548867919143006984001590182379037690061451374819102749638205499276411
11 715827883
12 20988936657440586486151264256610222593863921
13 5818271958090539483866337715340286685859615238455923067178938830011337070812055467405944360219483401

List of values

[5, 3, 11, 43, 683, 2731, 43691, 174763, 2796203, 30700509570548867919143006984001590182379037690061451374819102749638205499276411, 715827883, 20988936657440586486151264256610222593863921, 5818271958090539483866337715340286685859615238455923067178938830011337070812055467405944360219483401]

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

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