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A150028 as a simple table

n a(n)
0 1
1 2
2 6
3 16
4 54
5 169
6 602
7 1988
8 7290
9 25170
10 93811
11 330902
12 1249367
13 4499607
14 17116040
15 62347523
16 238894837
17 880763604
18 3388972673
19 12582449763
20 48639631649
21 182013638337
22 705478480829
23 2652531544952
24 10314218236630
25 38995799156417
26 151909821456349
27 576310438021719
28 2250333836996630

[1,2,6,16,54,169,602,1988,7290,25170,93811,330902,
 1249367,4499607,17116040,62347523,238894837,
 880763604,3388972673,12582449763,48639631649,
 182013638337,705478480829,2652531544952,
 10314218236630,38995799156417,151909821456349,
 576310438021719,2250333836996630]

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Last modified October 25 21:15 EDT 2021. Contains 348256 sequences. (Running on oeis4.)