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.

A377613 a(n) is the number of iterations of x -> 2*x + 3 until (# composites reached) = (# primes reached), starting with prime(n).

Table of values

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

List of values

[19, 1, 15, 15, 1, 13, 13, 15, 1, 3, 1, 1, 1, 7, 27, 3, 1, 1, 25, 1, 3, 1, 1, 5, 23, 1, 1, 1, 1, 7, 3, 1, 23, 3, 1, 1, 9, 1, 17, 5, 1, 1, 1, 3, 19, 7, 1, 3, 3, 3, 1, 1, 1, 1, 1, 1, 3, 1, 21, 1, 3, 1, 19, 1, 1, 1, 1, 3, 1, 3, 3, 1, 1, 1, 3, 3, 1, 17, 1, 3, 1]