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A338438 as a simple table

n a(n)
0 1
1 1
2 0
3 3
4 4
5 15
6 6
7 168
8 64
9 171
10 130
11 44418
12 804
13 802750
14 2380
15 683595
16 5782144
17 840363295
18 40410
19 24358246734
20 221953840
21 3114081516
22 5372831860
23 62269802986834
24 25703183400
25 548547778815000
26 3028000483716
27 9604167089258628
28 30673543523224
29 13242158988496348746

[1,1,0,3,4,15,6,168,64,171,130,44418,804,802750,
 2380,683595,5782144,840363295,40410,24358246734,
 221953840,3114081516,5372831860,62269802986834,
 25703183400,548547778815000,3028000483716,
 9604167089258628,30673543523224,
 13242158988496348746]

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Last modified January 27 19:57 EST 2023. Contains 359848 sequences. (Running on oeis4.)