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A223621 as a simple table

n a(n)
1 7
2 35
3 147
4 574
5 2114
6 7504
7 26050
8 88627
9 296989
10 985303
11 3236269
12 10543598
13 34156986
14 109995484
15 352428398
16 1125103059
17 3577593997
18 11336743971
19 35833521825
20 112944171696
21 355097604934
22 1114357838268
23 3489662154182

[7,35,147,574,2114,7504,26050,88627,296989,985303,
 3236269,10543598,34156986,109995484,352428398,
 1125103059,3577593997,11336743971,35833521825,
 112944171696,355097604934,1114357838268,
 3489662154182]

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Last modified June 26 10:23 EDT 2022. Contains 354879 sequences. (Running on oeis4.)