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.

A146560 Squarefree semiprimes n such that n+1 is squarefree and n+2 is prime.

Table of values

n a(n)
1 21
2 57
3 65
4 69
5 77
6 129
7 177
8 209
9 221
10 237
11 309
12 329
13 365
14 381
15 417
16 437
17 497
18 501
19 545
20 597
21 681
22 689
23 717
24 785
25 905
26 965
27 1037
28 1101
29 1121
30 1257
31 1317
32 1397
33 1437
34 1497
35 1509
36 1541
37 1569
38 1577
39 1661
40 1757
41 1821
42 1829
43 1865
44 1929
45 1977
46 1985
47 2201
48 2369
49 2577
50 2589
51 2669
52 2705
53 2885
54 2901

List of values

[21, 57, 65, 69, 77, 129, 177, 209, 221, 237, 309, 329, 365, 381, 417, 437, 497, 501, 545, 597, 681, 689, 717, 785, 905, 965, 1037, 1101, 1121, 1257, 1317, 1397, 1437, 1497, 1509, 1541, 1569, 1577, 1661, 1757, 1821, 1829, 1865, 1929, 1977, 1985, 2201, 2369, 2577, 2589, 2669, 2705, 2885, 2901]

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

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