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A120588 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 5
5 14
6 42
7 132
8 429
9 1430
10 4862
11 16796
12 58786
13 208012
14 742900
15 2674440
16 9694845
17 35357670
18 129644790
19 477638700
20 1767263190
21 6564120420
22 24466267020
23 91482563640
24 343059613650
25 1289904147324
26 4861946401452
27 18367353072152

[1,1,1,2,5,14,42,132,429,1430,4862,16796,58786,
 208012,742900,2674440,9694845,35357670,129644790,
 477638700,1767263190,6564120420,24466267020,
 91482563640,343059613650,1289904147324,
 4861946401452,18367353072152]

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Last modified February 17 15:59 EST 2018. Contains 299296 sequences. (Running on oeis4.)