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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.

A217197 Primes p such that p-3 is the greatest semiprime less than p.

Table of values

n a(n)
1 13
2 29
3 61
4 109
5 137
6 149
7 181
8 197
9 229
10 257
11 277
12 281
13 317
14 349
15 389
16 401
17 457
18 461
19 541
20 557
21 569
22 617
23 677
24 761
25 797
26 821
27 929
28 937
29 977
30 1021
31 1097
32 1129
33 1217
34 1237
35 1289
36 1297
37 1321
38 1481
39 1489
40 1549
41 1597
42 1621
43 1721
44 1777
45 1861
46 1877
47 1997
48 2029

List of values

[13, 29, 61, 109, 137, 149, 181, 197, 229, 257, 277, 281, 317, 349, 389, 401, 457, 461, 541, 557, 569, 617, 677, 761, 797, 821, 929, 937, 977, 1021, 1097, 1129, 1217, 1237, 1289, 1297, 1321, 1481, 1489, 1549, 1597, 1621, 1721, 1777, 1861, 1877, 1997, 2029]

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

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