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A199128 as a simple table

n a(n)
1 1
2 2
3 6
4 19
5 70
6 264
7 1038
8 4155
9 16896
10 69584
11 289146
12 1211873
13 5111178
14 21686612
15 92453594
16 395888507
17 1701506820
18 7337867736
19 31739124866
20 137656095241
21 598476364166
22 2607710997676
23 11385288787534
24 49800060551081

[1,2,6,19,70,264,1038,4155,16896,69584,289146,
 1211873,5111178,21686612,92453594,395888507,
 1701506820,7337867736,31739124866,137656095241,
 598476364166,2607710997676,11385288787534,
 49800060551081]

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Last modified April 5 03:15 EDT 2020. Contains 333238 sequences. (Running on oeis4.)