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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.

A241525 a(n) is the smallest start of a run of exactly n consecutive primes such that the sum of the digits of each prime is composite.

Table of values

n a(n)
1 19
2 17
3 13
4 521
5 509
6 503
7 499
8 491
9 14153
10 25793
11 25771
12 37663
13 37657
14 98729
15 98717
16 98713
17 98711
18 98689
19 98669
20 98663
21 98641
22 98639
23 98627
24 98621
25 98597
26 98573
27 69794393
28 69794383
29 268684679
30 268684651
31 268684627
32 329788829
33 545497787
34 545497769
35 545497759
36 545497753
37 545497747
38 545497741
39 545497727
40 545497723
41 545497691
42 545497681
43 545497679
44 545497637
45 545497633
46 545497609

List of values

[19, 17, 13, 521, 509, 503, 499, 491, 14153, 25793, 25771, 37663, 37657, 98729, 98717, 98713, 98711, 98689, 98669, 98663, 98641, 98639, 98627, 98621, 98597, 98573, 69794393, 69794383, 268684679, 268684651, 268684627, 329788829, 545497787, 545497769, 545497759, 545497753, 545497747, 545497741, 545497727, 545497723, 545497691, 545497681, 545497679, 545497637, 545497633, 545497609]

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

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