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.

A000216 Take sum of squares of digits of previous term, starting with 2.

Table of values

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

List of values

[2, 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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