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A281032 as a simple table

n a(n)
1 0
2 252
3 8886
4 38972
5 184290
6 770788
7 3042556
8 11471132
9 41949794
10 150344672
11 531019564
12 1853716800
13 6408859134
14 21978465412
15 74865327034
16 253567733120
17 854665596576
18 2868578317992
19 9592422240950
20 31971551621052
21 106249551692574

[0,252,8886,38972,184290,770788,3042556,11471132,
 41949794,150344672,531019564,1853716800,
 6408859134,21978465412,74865327034,253567733120,
 854665596576,2868578317992,9592422240950,
 31971551621052,106249551692574]

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Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)