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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.

A064770 Replace each digit of n with the floor of its square root.

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 2
5 2
6 2
7 2
8 2
9 3
10 10
11 11
12 11
13 11
14 12
15 12
16 12
17 12
18 12
19 13
20 10
21 11
22 11
23 11
24 12
25 12
26 12
27 12
28 12
29 13
30 10
31 11
32 11
33 11
34 12
35 12
36 12
37 12
38 12
39 13
40 20
41 21
42 21
43 21
44 22
45 22
46 22
47 22
48 22
49 23
50 20
51 21
52 21
53 21
54 22
55 22
56 22
57 22
58 22
59 23
60 20
61 21
62 21
63 21
64 22
65 22
66 22
67 22
68 22
69 23

List of values

[0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 10, 11, 11, 11, 12, 12, 12, 12, 12, 13, 10, 11, 11, 11, 12, 12, 12, 12, 12, 13, 10, 11, 11, 11, 12, 12, 12, 12, 12, 13, 20, 21, 21, 21, 22, 22, 22, 22, 22, 23, 20, 21, 21, 21, 22, 22, 22, 22, 22, 23, 20, 21, 21, 21, 22, 22, 22, 22, 22, 23]

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

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