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.

A217724 Smallest prime producing a gap with the next prime, the size of the gap being a composite number with 2n+1 as a factor.

Table of values

n a(n)
1 139
2 1831
3 1129
4 2971
5 1327
6 19333
7 81463
8 19609
9 44293
10 89689
11 173359
12 212701
13 265621
14 544279
15 1100977
16 396733
17 1098847
18 370261
19 1349533
20 6752623
21 5518687
22 6371401
23 10343761
24 2010733
25 4652353
26 33803689
27 83751121
28 38394127
29 39389989
30 79167733
31 142414669

List of values

[139, 1831, 1129, 2971, 1327, 19333, 81463, 19609, 44293, 89689, 173359, 212701, 265621, 544279, 1100977, 396733, 1098847, 370261, 1349533, 6752623, 5518687, 6371401, 10343761, 2010733, 4652353, 33803689, 83751121, 38394127, 39389989, 79167733, 142414669]

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

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