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A001421 formatted as a simple table:

n a(n)
0 1
1 120
2 83160
3 81681600
4 93699005400
5 117386113965120
6 155667030019300800
7 214804163196079142400
8 305240072216678400087000
9 443655767845074392936328000
10 656486312795713480715743268160

[1,120,83160,81681600,93699005400,117386113965120,
 155667030019300800,214804163196079142400,
 305240072216678400087000,
 443655767845074392936328000,
 656486312795713480715743268160]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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