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A056360 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 1
6 3
7 16
8 85
9 434
10 2271
11 11530
12 58400
13 290689
14 1436685
15 7036418
16 34286464
17 166316979
18 804557406
19 3884248150
20 18731033958
21 90269841924
22 434955114981
23 2096028083116
24 10104206901987
25 48733744753173
26 235196202817401
27 1135892957109815
28 5490007141743186

[0,0,0,0,1,3,16,85,434,2271,11530,58400,290689,
 1436685,7036418,34286464,166316979,804557406,
 3884248150,18731033958,90269841924,434955114981,
 2096028083116,10104206901987,48733744753173,
 235196202817401,1135892957109815,5490007141743186]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)