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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.

A023409 If any power of 2 ends with k 6's and 7's, they must be the first k terms of this sequence in reverse order.

Table of values

n a(n)
0 6
1 7
2 7
3 7
4 6
5 6
6 6
7 6
8 7
9 6
10 6
11 6
12 7
13 7
14 7
15 7
16 7
17 7
18 7
19 7
20 7
21 7
22 7
23 7
24 6
25 7
26 7
27 6
28 6
29 7
30 7
31 7
32 6
33 6
34 6
35 6
36 7
37 6
38 7
39 7
40 7
41 7
42 7
43 6
44 6
45 6
46 6
47 7
48 6
49 7
50 7
51 6
52 6
53 6
54 6
55 7
56 6
57 7
58 6
59 6
60 7
61 6
62 7
63 7
64 7
65 6
66 6
67 6
68 7
69 6
70 7
71 7
72 7
73 6
74 6
75 6
76 6
77 6
78 7
79 6
80 6
81 6
82 7
83 7
84 6
85 7
86 7
87 6
88 7
89 7
90 6
91 7
92 6
93 6
94 7
95 7
96 6
97 7
98 6
99 7
100 7
101 6
102 6
103 7
104 7
105 6
106 6
107 7

List of values

[6, 7, 7, 7, 6, 6, 6, 6, 7, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 7, 7, 6, 6, 7, 7, 7, 6, 6, 6, 6, 7, 6, 7, 7, 7, 7, 7, 6, 6, 6, 6, 7, 6, 7, 7, 6, 6, 6, 6, 7, 6, 7, 6, 6, 7, 6, 7, 7, 7, 6, 6, 6, 7, 6, 7, 7, 7, 6, 6, 6, 6, 6, 7, 6, 6, 6, 7, 7, 6, 7, 7, 6, 7, 7, 6, 7, 6, 6, 7, 7, 6, 7, 6, 7, 7, 6, 6, 7, 7, 6, 6, 7]

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