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.

A068887 Primes with property that digits alternate in parity individually as well as in concatenation with previous terms.

Table of values

n a(n)
1 2
2 3
3 23
4 29
5 41
6 43
7 47
8 61
9 67
10 83
11 89
12 2129
13 2141
14 2143
15 2161
16 2309
17 2341
18 2347
19 2381
20 2383
21 2389
22 2503
23 2521
24 2543
25 2549
26 2707
27 2729
28 2741
29 2749
30 2767
31 2789
32 2903
33 2909
34 2927
35 2963
36 2969
37 4127
38 4129
39 4327
40 4349

List of values

[2, 3, 23, 29, 41, 43, 47, 61, 67, 83, 89, 2129, 2141, 2143, 2161, 2309, 2341, 2347, 2381, 2383, 2389, 2503, 2521, 2543, 2549, 2707, 2729, 2741, 2749, 2767, 2789, 2903, 2909, 2927, 2963, 2969, 4127, 4129, 4327, 4349]

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

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