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A278749 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 9
5 39
6 189
7 1137
8 7521
9 58221
10 487521
11 4615623
12 46747449
13 523484019
14 6218441469
15 80413567317
16 1095843999681
17 16072230046041
18 247107215918241
19 4053246141598443
20 69395454770712489
21 1258826280827924799
22 23749475226740969949
23 472083799922946212697
24 9730211267060692468641
25 210327336751547848824261
26 4701988645468367963255361
27 109812853605044722106919663

[1,1,1,3,9,39,189,1137,7521,58221,487521,4615623,
 46747449,523484019,6218441469,80413567317,
 1095843999681,16072230046041,247107215918241,
 4053246141598443,69395454770712489,
 1258826280827924799,23749475226740969949,
 472083799922946212697,9730211267060692468641,
 210327336751547848824261,
 4701988645468367963255361,
 109812853605044722106919663]

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Last modified April 23 19:56 EDT 2024. Contains 371916 sequences. (Running on oeis4.)