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.

A087594 Define dd(n) = the number formed by concatenating the absolute difference of successive digits. Sequence contains primes p such that dd(p)=q is a prime, dd(q) is also a prime = r and so on until a single-digit prime (2,3,5,7) arises. (Primes in which the number formed by successive digit differences are primes at every step until a single-digit prime is obtained.).

Table of values

n a(n)
0 13
1 29
2 31
3 41
4 47
5 53
6 61
7 79
8 83
9 97
10 103
11 113
12 163
13 227
14 229
15 331
16 347
17 367
18 401
19 449
20 487
21 503
22 521
23 523
24 541
25 547
26 557
27 563
28 569
29 587
30 601
31 661
32 709
33 743
34 769
35 821
36 823
37 881
38 883
39 907
40 941
41 947
42 967
43 997
44 1063
45 1069
46 1103
47 1163
48 1481
49 1609
50 1621
51 1663

List of values

[13, 29, 31, 41, 47, 53, 61, 79, 83, 97, 103, 113, 163, 227, 229, 331, 347, 367, 401, 449, 487, 503, 521, 523, 541, 547, 557, 563, 569, 587, 601, 661, 709, 743, 769, 821, 823, 881, 883, 907, 941, 947, 967, 997, 1063, 1069, 1103, 1163, 1481, 1609, 1621, 1663]

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

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