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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.

A081328 Greatest 3-smooth number m such that n-m is also 3-smooth, a(n)=0 if no such 3-smooth number exists.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 4
7 6
8 6
9 8
10 9
11 9
12 9
13 12
14 12
15 12
16 12
17 16
18 16
19 18
20 18
21 18
22 18
23 0
24 18
25 24
26 24
27 24
28 27
29 27
30 27
31 27
32 24
33 32
34 32
35 32
36 32
37 36
38 36
39 36
40 36
41 32
42 36
43 27
44 36
45 36
46 0
47 0
48 36
49 48
50 48
51 48
52 48
53 0
54 48
55 54
56 54
57 54
58 54
59 32
60 54
61 0
62 54
63 54
64 48
65 64
66 64
67 64
68 64
69 0
70 64
71 0
72 64
73 72
74 72
75 72
76 72
77 0

List of values

[0, 1, 2, 3, 4, 4, 6, 6, 8, 9, 9, 9, 12, 12, 12, 12, 16, 16, 18, 18, 18, 18, 0, 18, 24, 24, 24, 27, 27, 27, 27, 24, 32, 32, 32, 32, 36, 36, 36, 36, 32, 36, 27, 36, 36, 0, 0, 36, 48, 48, 48, 48, 0, 48, 54, 54, 54, 54, 32, 54, 0, 54, 54, 48, 64, 64, 64, 64, 0, 64, 0, 64, 72, 72, 72, 72, 0]

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

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