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A102893 as a simple table

n a(n)
0 1
1 0
2 1
3 5
4 25
5 130
6 700
7 3876
8 21945
9 126500
10 740025
11 4382625
12 26225628
13 158331880
14 963250600
15 5899491640
16 36345082425
17 225082957512
18 1400431689475
19 8749779798375
20 54874635255825
21 345329274848250
22 2179969531405680

[1,0,1,5,25,130,700,3876,21945,126500,740025,
 4382625,26225628,158331880,963250600,5899491640,
 36345082425,225082957512,1400431689475,
 8749779798375,54874635255825,345329274848250,
 2179969531405680]

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Last modified April 20 02:14 EDT 2024. Contains 371798 sequences. (Running on oeis4.)