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.

A370998 2*a(n) = m is the least even number m such that all sums m + prime(k), k=1..n are composite.

Table of values

n a(n)
1 1
2 3
3 11
4 44
5 44
6 56
7 56
8 101
9 101
10 101
11 359
12 359
13 359
14 664
15 664
16 821
17 821
18 821
19 866
20 866
21 866
22 2623
23 2623
24 2623
25 2623
26 2944
27 2944
28 2944
29 2944
30 2944
31 2944
32 2944
33 2944
34 2944
35 5171
36 5171
37 12839
38 18833
39 18833
40 18833
41 18833
42 29947
43 29947
44 29947
45 38002
46 38002
47 38002
48 38002
49 51551

List of values

[1, 3, 11, 44, 44, 56, 56, 101, 101, 101, 359, 359, 359, 664, 664, 821, 821, 821, 866, 866, 866, 2623, 2623, 2623, 2623, 2944, 2944, 2944, 2944, 2944, 2944, 2944, 2944, 2944, 5171, 5171, 12839, 18833, 18833, 18833, 18833, 29947, 29947, 29947, 38002, 38002, 38002, 38002, 51551]

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

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