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A151515 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 15
6 44
7 121
8 353
9 1005
10 2919
11 8398
12 24310
13 70064
14 202225
15 582365
16 1676889
17 4821924
18 13857720
19 39787804

[1,1,2,6,15,44,121,353,1005,2919,8398,24310,70064,
 202225,582365,1676889,4821924,13857720,39787804]

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Last modified April 22 22:19 EDT 2021. Contains 343197 sequences. (Running on oeis4.)