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A026590 as a simple table

n a(n)
0 1
1 1
2 5
3 19
4 69
5 341
6 1203
7 6336
8 22593
9 121483
10 438533
11 2381512
12 8677763
13 47419503
14 173984792
15 954961034
16 3522101709
17 19397198595
18 71831252031

[1,1,5,19,69,341,1203,6336,22593,121483,438533,
 2381512,8677763,47419503,173984792,954961034,
 3522101709,19397198595,71831252031]

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Last modified June 7 02:48 EDT 2020. Contains 334836 sequences. (Running on oeis4.)