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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.

A080709 Take sum of squares of digits of previous term, starting with 4.

Table of values

n a(n)
1 4
2 16
3 37
4 58
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

List of values

[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, 42, 20, 4, 16, 37]

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

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