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A003442 as a simple table

n a(n)
4 1
5 2
6 11
7 48
8 208
9 858
10 3507
11 14144
12 56698
13 226100
14 898942
15 3565920
16 14124496
17 55887930
18 220985795
19 873396480
20 3450940830
21 13633173180
22 53855628554
23 212750148000
24 840496068160
25 3320817060132
26 13122294166126
27 51860761615488

[1,2,11,48,208,858,3507,14144,56698,226100,898942,
 3565920,14124496,55887930,220985795,873396480,
 3450940830,13633173180,53855628554,212750148000,
 840496068160,3320817060132,13122294166126,
 51860761615488]

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Last modified January 18 01:05 EST 2020. Contains 330995 sequences. (Running on oeis4.)