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A289501 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 12
5 32
6 112
7 352
8 1296
9 4448
10 16640
11 59968
12 231168
13 856960
14 3334400
15 12679424
16 49991424
17 192890880
18 767229952
19 2998427648
20 12015527936
21 47438950400
22 191117033472
23 760625733632
24 3082675150848
25 12346305839104
26 50223511928832
27 202359539335168

[1,1,2,4,12,32,112,352,1296,4448,16640,59968,
 231168,856960,3334400,12679424,49991424,192890880,
 767229952,2998427648,12015527936,47438950400,
 191117033472,760625733632,3082675150848,
 12346305839104,50223511928832,202359539335168]

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Last modified April 24 05:49 EDT 2024. Contains 371918 sequences. (Running on oeis4.)