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A227367 as a simple table

n a(n)
0 1
1 1
2 2
3 3
4 6
5 21
6 381
7 762
8 290703
9 84397476747
10 7122934049104967061783
11 14245868098209934123566
12 101472378935797762635619628499635817245339961
13 10296643686890133479148472187437767614663729545766251948487237380959682684821520304732841

[1,1,2,3,6,21,381,762,290703,84397476747,
 7122934049104967061783,14245868098209934123566,
 101472378935797762635619628499635817245339961,
 10296643686890133479148472187437767614663729545766\
 251948487237380959682684821520304732841]

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Last modified September 19 18:36 EDT 2021. Contains 347564 sequences. (Running on oeis4.)