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A172158 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 978
6 62266
7 1220298
8 12033330
9 77784658
10 377818258
11 1492665418
12 5042436754
13 15062292834
14 40736208186
15 101489568538
16 235984235970
17 517314078210
18 1077720399538
19 2147500025914
20 4114538426818
21 7613150953522
22 13653752767866
23 23808409699242

[0,0,0,0,978,62266,1220298,12033330,77784658,
 377818258,1492665418,5042436754,15062292834,
 40736208186,101489568538,235984235970,
 517314078210,1077720399538,2147500025914,
 4114538426818,7613150953522,13653752767866,
 23808409699242]

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Last modified November 17 18:24 EST 2019. Contains 329241 sequences. (Running on oeis4.)