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A222643 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 38
6 124
7 430
8 1530
9 5378
10 18938
11 67042
12 238446
13 849586
14 3033214
15 10851386
16 38895414
17 139634834
18 502003486
19 1807104810
20 6512929766
21 23498319154
22 84864219966
23 306764487338
24 1109807490550
25 4018136484386
26 14558333191406

[1,1,3,12,38,124,430,1530,5378,18938,67042,238446,
 849586,3033214,10851386,38895414,139634834,
 502003486,1807104810,6512929766,23498319154,
 84864219966,306764487338,1109807490550,
 4018136484386,14558333191406]

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Last modified August 22 07:59 EDT 2024. Contains 375356 sequences. (Running on oeis4.)