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.

A258207 Square array: row n gives the numbers remaining after the stage n of Lucky sieve.

Table of values

n a(n)
1 1
2 3
3 1
4 5
5 3
6 1
7 7
8 7
9 3
10 1
11 9
12 9
13 7
14 3
15 1
16 11
17 13
18 9
19 7
20 3
21 1
22 13
23 15
24 13
25 9
26 7
27 3
28 1
29 15
30 19
31 15
32 13
33 9
34 7
35 3
36 1
37 17
38 21
39 21
40 15
41 13
42 9
43 7
44 3
45 1
46 19
47 25
48 25
49 21
50 15
51 13
52 9
53 7
54 3
55 1
56 21
57 27
58 27
59 25
60 21
61 15
62 13
63 9
64 7
65 3
66 1
67 23
68 31
69 31
70 31
71 25
72 21
73 15
74 13
75 9
76 7
77 3
78 1
79 25
80 33
81 33
82 33
83 31
84 25
85 21
86 15
87 13
88 9
89 7
90 3
91 1
92 27
93 37
94 37
95 37
96 33
97 31
98 25
99 21
100 15
101 13
102 9
103 7
104 3
105 1
106 29
107 39
108 43
109 43
110 37
111 33
112 31
113 25
114 21
115 15
116 13
117 9
118 7
119 3
120 1

List of values

[1, 3, 1, 5, 3, 1, 7, 7, 3, 1, 9, 9, 7, 3, 1, 11, 13, 9, 7, 3, 1, 13, 15, 13, 9, 7, 3, 1, 15, 19, 15, 13, 9, 7, 3, 1, 17, 21, 21, 15, 13, 9, 7, 3, 1, 19, 25, 25, 21, 15, 13, 9, 7, 3, 1, 21, 27, 27, 25, 21, 15, 13, 9, 7, 3, 1, 23, 31, 31, 31, 25, 21, 15, 13, 9, 7, 3, 1, 25, 33, 33, 33, 31, 25, 21, 15, 13, 9, 7, 3, 1, 27, 37, 37, 37, 33, 31, 25, 21, 15, 13, 9, 7, 3, 1, 29, 39, 43, 43, 37, 33, 31, 25, 21, 15, 13, 9, 7, 3, 1]