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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.

A067417 Triangle with columns built from certain power sequences.

Table of values

n a(n)
0 1
1 3
2 1
3 9
4 4
5 1
6 27
7 24
8 5
9 1
10 81
11 144
12 45
13 6
14 1
15 243
16 864
17 405
18 72
19 7
20 1
21 729
22 5184
23 3645
24 864
25 105
26 8
27 1
28 2187
29 31104
30 32805
31 10368
32 1575
33 144
34 9
35 1
36 6561
37 186624
38 295245
39 124416
40 23625
41 2592
42 189
43 10
44 1
45 19683
46 1119744
47 2657205
48 1492992
49 354375
50 46656
51 3969
52 240
53 11
54 1

List of values

[1, 3, 1, 9, 4, 1, 27, 24, 5, 1, 81, 144, 45, 6, 1, 243, 864, 405, 72, 7, 1, 729, 5184, 3645, 864, 105, 8, 1, 2187, 31104, 32805, 10368, 1575, 144, 9, 1, 6561, 186624, 295245, 124416, 23625, 2592, 189, 10, 1, 19683, 1119744, 2657205, 1492992, 354375, 46656, 3969, 240, 11, 1]

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

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