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A298927 as a simple table

n a(n)
1 0
2 11
3 3
4 23
5 94
6 255
7 666
8 2720
9 8571
10 30093
11 106192
12 369318
13 1291934
14 4552705
15 15952349
16 56078262
17 197277132
18 693611434
19 2438933680
20 8579643205
21 30173988847
22 106130105150
23 373307026724
24 1313049614295
25 4618497134678
26 16245278266932

[0,11,3,23,94,255,666,2720,8571,30093,106192,
 369318,1291934,4552705,15952349,56078262,
 197277132,693611434,2438933680,8579643205,
 30173988847,106130105150,373307026724,
 1313049614295,4618497134678,16245278266932]

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Last modified December 5 06:52 EST 2021. Contains 349543 sequences. (Running on oeis4.)