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A338861 as a simple table

n a(n)
1 1
2 2
3 6
4 15
5 42
6 143
7 399
8 1190
9 4209
10 10920
11 37245
12 109886
13 339745
14 1037186
15 3205734
16 9784263
17 29837784
18 93313919
19 289627536

[1,2,6,15,42,143,399,1190,4209,10920,37245,109886,
 339745,1037186,3205734,9784263,29837784,93313919,
 289627536]

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Last modified April 14 19:16 EDT 2021. Contains 342951 sequences. (Running on oeis4.)