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A120381 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 7
4 176
5 281589
6 5134205287973
7 158606118553696417431847045996

[1,1,2,7,176,281589,5134205287973,
 158606118553696417431847045996]

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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