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.

A072060 Smallest prime p such that 2*p+1 has n prime factors (with multiplicity).

Table of values

n a(n)
1 2
2 7
3 13
4 67
5 283
6 607
7 1093
8 12757
9 22963
10 49207
11 482233
12 1623847
13 797161
14 14614627
15 19929037
16 35872267
17 150663523
18 2044719247
19 1355971711
20 9879222469
21 37773497677
22 200490103057
23 172595827849
24 235357947067
25 1176789735337
26 5507375961379
27 10591107618037

List of values

[2, 7, 13, 67, 283, 607, 1093, 12757, 22963, 49207, 482233, 1623847, 797161, 14614627, 19929037, 35872267, 150663523, 2044719247, 1355971711, 9879222469, 37773497677, 200490103057, 172595827849, 235357947067, 1176789735337, 5507375961379, 10591107618037]

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

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