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A235596 as a simple table

n a(n)
1 0
2 0
3 2
4 9
5 40
6 195
7 1056
8 6321
9 41392
10 293607
11 2237920
12 18210093
13 157329096
14 1436630091
15 13810863808
16 139305550065
17 1469959371232
18 16184586405327
19 185504221191744
20 2208841954063317
21 27272621155678840
22 348586218389733555
23 4605223387997411872
24 62797451641106266329
25 882730631284319415504

[0,0,2,9,40,195,1056,6321,41392,293607,2237920,
 18210093,157329096,1436630091,13810863808,
 139305550065,1469959371232,16184586405327,
 185504221191744,2208841954063317,
 27272621155678840,348586218389733555,
 4605223387997411872,62797451641106266329,
 882730631284319415504]

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Last modified June 3 09:08 EDT 2024. Contains 373057 sequences. (Running on oeis4.)