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A147686 formatted as a simple table:

n a(n)
1 1
2 14
3 6930
4 5223915
5 27032968200
6 164401445439455
7 3627155158988429250
8 86733224358763671877835
9 5469038805616093755410863500 

[1,14,6930,5223915,27032968200,164401445439455,
 3627155158988429250,86733224358763671877835,
 5469038805616093755410863500]

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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