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A308023 as a simple table

n a(n)
1 1
2 1
3 4
4 14
5 52
6 208
7 908
8 4304
9 22016
10 120796
11 706896
12 4389752
13 28800668
14 198884648
15 1440809932
16 10918549748
17 86331306980
18 710609746752
19 6076740094448
20 53887906573064
21 494734785732236
22 4695242718593096
23 45998992617959932
24 464614423225361404
25 4832633949407618644

[1,1,4,14,52,208,908,4304,22016,120796,706896,
 4389752,28800668,198884648,1440809932,10918549748,
 86331306980,710609746752,6076740094448,
 53887906573064,494734785732236,4695242718593096,
 45998992617959932,464614423225361404,
 4832633949407618644]

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Last modified May 29 02:45 EDT 2022. Contains 354122 sequences. (Running on oeis4.)