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A327845 as a simple table

n a(n)
1 1
2 2
3 4
4 12
5 40
6 132
7 428
8 1668
9 7628
10 36924
11 199000
12 1161824
13 7231332 

[1,2,4,12,40,132,428,1668,7628,36924,199000,
 1161824,7231332]

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Last modified June 10 00:22 EDT 2024. Contains 373251 sequences. (Running on oeis4.)