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.

A051342 Smallest prime factor of 1 + (product of first n primes).

Table of values

n a(n)
1 3
2 7
3 31
4 211
5 2311
6 59
7 19
8 347
9 317
10 331
11 200560490131
12 181
13 61
14 167
15 953
16 73
17 277
18 223
19 54730729297
20 1063
21 2521
22 22093
23 265739
24 131
25 2336993
26 960703
27 2297
28 149
29 334507
30 5122427
31 1543
32 1951
33 881
34 678279959005528882498681487
35 87549524399
36 23269086799180847

List of values

[3, 7, 31, 211, 2311, 59, 19, 347, 317, 331, 200560490131, 181, 61, 167, 953, 73, 277, 223, 54730729297, 1063, 2521, 22093, 265739, 131, 2336993, 960703, 2297, 149, 334507, 5122427, 1543, 1951, 881, 678279959005528882498681487, 87549524399, 23269086799180847]

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

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