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.

A023401 If any even power of 2 ends with k 1's and 4's, they must be the first k terms of this sequence in reverse order.

Table of values

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

List of values

[4, 4, 1, 4, 1, 4, 1, 4, 4, 1, 1, 4, 4, 4, 4, 1, 4, 4, 1, 4, 1, 1, 1, 4, 1, 1, 1, 4, 4, 4, 1, 1, 4, 1, 1, 1, 1, 1, 1, 4, 4, 4, 1, 1, 1, 4, 4, 4, 4, 4, 4, 1, 4, 4, 4, 4, 1, 1, 4, 1, 4, 4, 1, 4, 1, 4, 4, 4, 1, 1, 1, 4, 4, 4, 4, 4, 1, 1, 4, 4, 1, 4, 4, 1, 1, 4, 1, 1, 1, 1, 4, 4, 4, 1, 4, 4, 4, 1, 1, 1, 4, 1, 4, 4, 4, 1, 1, 4]