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.

A073918 Smallest prime which is 1 more than a product of n distinct primes: a(n) is a prime and a(n) - 1 is a squarefree number with n prime factors.

Table of values

n a(n)
0 2
1 3
2 7
3 31
4 211
5 2311
6 43891
7 870871
8 13123111
9 300690391
10 6915878971
11 200560490131
12 11406069164491
13 386480064480511
14 18826412648012971
15 693386350578511591
16 37508276737897976011
17 3087649419126112110271
18 183452981525059000664911
19 11465419967969569966774411

List of values

[2, 3, 7, 31, 211, 2311, 43891, 870871, 13123111, 300690391, 6915878971, 200560490131, 11406069164491, 386480064480511, 18826412648012971, 693386350578511591, 37508276737897976011, 3087649419126112110271, 183452981525059000664911, 11465419967969569966774411]

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

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