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A037647 as a simple table

n a(n)
1 3
2 15
3 76
4 383
5 1915
6 9576
7 47883
8 239415
9 1197076
10 5985383
11 29926915
12 149634576
13 748172883
14 3740864415
15 18704322076
16 93521610383
17 467608051915
18 2338040259576
19 11690201297883
20 58451006489415
21 292255032447076

[3,15,76,383,1915,9576,47883,239415,1197076,
 5985383,29926915,149634576,748172883,3740864415,
 18704322076,93521610383,467608051915,
 2338040259576,11690201297883,58451006489415,
 292255032447076]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)