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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.

A144253 Bases and exponents in the prime decomposition of n replaced by digits of the Gregorian Calendar with these indices.

Table of values

n a(n)
1 1
2 3
3 6
4 5
5 256
6 2
7 18
8 5
9 256
10 27
11 30
12 2
13 12288
14 6
15 12
16 59049
17 729
18 5
19 524288
20 3
21 15552
22 56
23 18
24 5
25 2048
26 729
27 12
28 387420489
29 3645
30 2
31 0
32 3
33 7776
34 16
35 1
36 18
37 200
38 2
39 18
40 12
41 9
42 3
43 90
44 2
45 32
46 3645
47 16
48 1
49 750
50 25
51 8
52 18
53 324
54 1
55 5103

List of values

[1, 3, 6, 5, 256, 2, 18, 5, 256, 27, 30, 2, 12288, 6, 12, 59049, 729, 5, 524288, 3, 15552, 56, 18, 5, 2048, 729, 12, 387420489, 3645, 2, 0, 3, 7776, 16, 1, 18, 200, 2, 18, 12, 9, 3, 90, 2, 32, 3645, 16, 1, 750, 25, 8, 18, 324, 1, 5103]