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.

A088072 Numbers sandwiched between two numbers having only one prime divisor (at least) one of which is composite.

Table of values

n a(n)
1 3
2 8
3 10
4 24
5 26
6 28
7 48
8 80
9 82
10 126
11 168
12 242
13 360
14 728
15 840
16 1368
17 1848
18 2208
19 2400
20 3720
21 5040
22 6562
23 6858
24 7920
25 10608
26 11448
27 14640
28 16128
29 17160
30 19320
31 19682
32 24390
33 28560
34 29790
35 29928
36 36480
37 44520
38 49728
39 50652
40 54288
41 57120
42 59050

List of values

[3, 8, 10, 24, 26, 28, 48, 80, 82, 126, 168, 242, 360, 728, 840, 1368, 1848, 2208, 2400, 3720, 5040, 6562, 6858, 7920, 10608, 11448, 14640, 16128, 17160, 19320, 19682, 24390, 28560, 29790, 29928, 36480, 44520, 49728, 50652, 54288, 57120, 59050]

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

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