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.

A000221 Take sum of squares of digits of previous term; start with 5.

Table of values

n a(n)
1 5
2 25
3 29
4 85
5 89
6 145
7 42
8 20
9 4
10 16
11 37
12 58
13 89
14 145
15 42
16 20
17 4
18 16
19 37
20 58
21 89
22 145
23 42
24 20
25 4
26 16
27 37
28 58
29 89
30 145
31 42
32 20
33 4
34 16
35 37
36 58
37 89
38 145
39 42
40 20
41 4
42 16
43 37
44 58
45 89
46 145
47 42
48 20
49 4
50 16
51 37
52 58
53 89
54 145
55 42
56 20
57 4
58 16
59 37
60 58
61 89
62 145
63 42
64 20
65 4
66 16
67 37
68 58
69 89
70 145

List of values

[5, 25, 29, 85, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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