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A259644 as a simple table

n a(n)
0 1
1 2
2 5
3 31
4 2419
5 176795035
6 883922739668546300971
7 1511516294872733607299090320742127160367108420362968907

[1,2,5,31,2419,176795035,883922739668546300971,
 15115162948727336072990903207421271603671084203629\
 68907]

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Last modified September 28 01:20 EDT 2020. Contains 337388 sequences. (Running on oeis4.)