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A000246 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 9
5 45
6 225
7 1575
8 11025
9 99225
10 893025
11 9823275
12 108056025
13 1404728325
14 18261468225
15 273922023375
16 4108830350625
17 69850115960625
18 1187451971330625
19 22561587455281875
20 428670161650355625
21 9002073394657468125
22 189043541287806830625

[1,1,1,3,9,45,225,1575,11025,99225,893025,9823275,
 108056025,1404728325,18261468225,273922023375,
 4108830350625,69850115960625,1187451971330625,
 22561587455281875,428670161650355625,
 9002073394657468125,189043541287806830625]

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)