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.

A351999 A chain reaction sequence: a digit d1 from a(n) is expelled towards a(n+1) where it hits a digit d2 [from a(n+1)] and replaces it; d2 in turn is expelled towards a(n+2), hits a digit d3 there and replaces it; d3 in turn is expelled towards a(n+3), hits a digit there, and replaces it; d4 is expelled... etc. At the end of the chain reaction, only Fibonacci numbers will be left. This is the lexicographically earliest sequence of distinct positive integers with this property.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 30
6 610
7 611
8 5
9 6
10 110
11 7
12 307
13 612
14 8
15 9
16 80
17 613
18 10
19 614
20 31
21 13
22 20
23 615
24 15
25 21
26 22
27 11
28 23
29 12
30 41
31 32
32 51
33 25
34 61
35 210
36 71
37 317
38 24
39 33
40 14
41 26
42 310
43 16
44 410
45 34
46 35
47 45
48 36
49 510
50 50
51 616
52 710
53 327
54 81
55 19
56 27
57 337
58 17
59 347
60 37
61 357
62 52
63 91
64 82
65 133
66 28
67 29
68 233
69 333
70 18
71 39
72 44

List of values

[1, 2, 3, 4, 30, 610, 611, 5, 6, 110, 7, 307, 612, 8, 9, 80, 613, 10, 614, 31, 13, 20, 615, 15, 21, 22, 11, 23, 12, 41, 32, 51, 25, 61, 210, 71, 317, 24, 33, 14, 26, 310, 16, 410, 34, 35, 45, 36, 510, 50, 616, 710, 327, 81, 19, 27, 337, 17, 347, 37, 357, 52, 91, 82, 133, 28, 29, 233, 333, 18, 39, 44]