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.

A228170 The least semiprime (A001358) such that between it and the next n semiprimes, but not the next n+1 semiprimes, there are no primes.

Table of values

n a(n)
1 9
2 33
3 91
4 141
5 115
6 213
7 1382
8 1639
9 1133
10 2558
11 2973
12 1329
13 15685
14 16143
15 9974
16 35678
17 34063
18 43333
19 19613
20 107381
21 162145
22 44294
23 404599
24 461722
25 838259
26 155923
27 535403
28 492117
29 396737
30 2181739
31 370262
32 1468279
33 6034249
34 3933601
35 1671783
36 25180174
37 1357203

List of values

[9, 33, 91, 141, 115, 213, 1382, 1639, 1133, 2558, 2973, 1329, 15685, 16143, 9974, 35678, 34063, 43333, 19613, 107381, 162145, 44294, 404599, 461722, 838259, 155923, 535403, 492117, 396737, 2181739, 370262, 1468279, 6034249, 3933601, 1671783, 25180174, 1357203]