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A238124 as a simple table

n a(n)
0 0
1 1
2 1
3 3
4 7
5 20
6 56
7 182
8 589
9 2088
10 7522
11 28820
12 113092
13 464477
14 1955760
15 8541860
16 38215077
17 176316928
18 832181774
19 4033814912
20 19973824386
21 101257416701
22 523648869394
23 2765873334372
24 14883594433742
25 81646343582385
26 455752361294076
27 2589414185398032

[0,1,1,3,7,20,56,182,589,2088,7522,28820,113092,
 464477,1955760,8541860,38215077,176316928,
 832181774,4033814912,19973824386,101257416701,
 523648869394,2765873334372,14883594433742,
 81646343582385,455752361294076,2589414185398032]

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Last modified June 5 01:23 EDT 2024. Contains 373102 sequences. (Running on oeis4.)