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A150899 as a simple table

n a(n)
0 1
1 2
2 8
3 34
4 158
5 734
6 3522
7 16931
8 82554
9 403038
10 1981441
11 9752204
12 48182790
13 238274637
14 1180966793
15 5857505302
16 29093385069
17 144585962175
18 719208130384
19 3579154241329
20 17822841278776
21 88782972903383
22 442460346577831
23 2205683206949191
24 10998978955143953
25 54860627855107552
26 273700020776978268

[1,2,8,34,158,734,3522,16931,82554,403038,1981441,
 9752204,48182790,238274637,1180966793,5857505302,
 29093385069,144585962175,719208130384,
 3579154241329,17822841278776,88782972903383,
 442460346577831,2205683206949191,
 10998978955143953,54860627855107552,
 273700020776978268]

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Last modified June 26 18:18 EDT 2022. Contains 354885 sequences. (Running on oeis4.)