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A143547 as a simple table

n a(n)
0 1
1 1
2 1
3 4
4 7
5 34
6 70
7 368
8 819
9 4495
10 10472
11 59052
12 141778
13 814506
14 1997688
15 11633440
16 28989675
17 170574723
18 430321633
19 2552698720
20 6503352856
21 38832808586
22 99726673130
23 598724403680
24 1547847846090
25 9335085772194

[1,1,1,4,7,34,70,368,819,4495,10472,59052,141778,
 814506,1997688,11633440,28989675,170574723,
 430321633,2552698720,6503352856,38832808586,
 99726673130,598724403680,1547847846090,
 9335085772194]

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Last modified May 6 02:46 EDT 2021. Contains 343579 sequences. (Running on oeis4.)