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A189586 as a simple table

n a(n)
1 1
2 1
3 1
4 4
5 10
6 20
7 46
8 90
9 185
10 374
11 810
12 1718
13 3565
14 7504
15 15668
16 32880
17 68748
18 144309
19 302723
20 633904
21 1328936
22 2784579
23 5837343
24 12232245
25 25638253
26 53738027
27 112620095
28 236040957
29 494698039
30 1036837512
31 2173041695
32 4554382398

[1,1,1,4,10,20,46,90,185,374,810,1718,3565,7504,
 15668,32880,68748,144309,302723,633904,1328936,
 2784579,5837343,12232245,25638253,53738027,
 112620095,236040957,494698039,1036837512,
 2173041695,4554382398]

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Last modified January 31 22:04 EST 2023. Contains 359981 sequences. (Running on oeis4.)