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A055550 as a simple table

n a(n)
1 0
2 0
3 3
4 22
5 78
6 245
7 750
8 2057
9 5597
10 14884
11 38975
12 101629
13 264239
14 687007
15 1801533
16 4744920
17 12604009
18 33763684
19 91210364 

[0,0,3,22,78,245,750,2057,5597,14884,38975,101629,
 264239,687007,1801533,4744920,12604009,33763684,
 91210364]

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Last modified August 28 01:06 EDT 2024. Contains 375477 sequences. (Running on oeis4.)