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A212823 as a simple table

n a(n)
1 1
2 2
3 5
4 12
5 33
6 90
7 246
8 672
9 1836
10 5016
11 13704
12 37440
13 102288
14 279456
15 763488
16 2085888
17 5698752
18 15569280
19 42536064
20 116210688
21 317493504
22 867408384
23 2369803776
24 6474424320
25 17688456192
26 48325761024
27 132028434432
28 360708390912

[1,2,5,12,33,90,246,672,1836,5016,13704,37440,
 102288,279456,763488,2085888,5698752,15569280,
 42536064,116210688,317493504,867408384,2369803776,
 6474424320,17688456192,48325761024,132028434432,
 360708390912]

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Last modified March 19 02:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)