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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.

A377611 a(n) is the number of iterations of x -> 2*x - 5 until (# composites reached) = (# primes reached), starting with prime(n+4).

Table of values

n a(n)
1 25
2 1
3 19
4 1
5 11
6 15
7 1
8 1
9 1
10 1
11 13
12 9
13 3
14 1
15 1
16 21
17 1
18 1
19 1
20 11
21 1
22 7
23 1
24 1
25 1
26 1
27 1
28 11
29 17
30 1
31 3
32 1
33 1
34 1
35 1
36 1
37 13
38 1
39 1
40 1
41 5
42 1
43 1
44 1
45 3
46 1
47 3
48 1
49 1
50 1
51 9
52 9
53 1
54 1
55 1
56 15
57 1
58 1
59 1
60 5
61 1
62 1
63 1
64 1
65 1
66 1
67 11
68 1
69 1
70 1
71 1
72 3
73 3
74 1
75 3
76 1
77 1
78 1
79 7
80 1
81 1
82 3

List of values

[25, 1, 19, 1, 11, 15, 1, 1, 1, 1, 13, 9, 3, 1, 1, 21, 1, 1, 1, 11, 1, 7, 1, 1, 1, 1, 1, 11, 17, 1, 3, 1, 1, 1, 1, 1, 13, 1, 1, 1, 5, 1, 1, 1, 3, 1, 3, 1, 1, 1, 9, 9, 1, 1, 1, 15, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 11, 1, 1, 1, 1, 3, 3, 1, 3, 1, 1, 1, 7, 1, 1, 3]