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.

A108215 4-almost primes equal to the product of two successive semiprimes.

Table of values

n a(n)
1 24
2 54
3 90
4 140
5 210
6 315
7 462
8 550
9 650
10 858
11 1122
12 1190
13 1330
14 1482
15 1794
16 2254
17 2499
18 2805
19 3135
20 3306
21 3596
22 4030
23 4485
24 5106
25 5698
26 6314
27 6970
28 7310
29 7482
30 7917
31 8463
32 8742
33 8930
34 10070
35 11766
36 12765
37 13570
38 14042
39 14399
40 14762
41 15006
42 15867

List of values

[24, 54, 90, 140, 210, 315, 462, 550, 650, 858, 1122, 1190, 1330, 1482, 1794, 2254, 2499, 2805, 3135, 3306, 3596, 4030, 4485, 5106, 5698, 6314, 6970, 7310, 7482, 7917, 8463, 8742, 8930, 10070, 11766, 12765, 13570, 14042, 14399, 14762, 15006, 15867]

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

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