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A155747 formatted as a simple table:

n a(n)
1 2
2 4
3 12
4 60
5 60
6 120
7 360
8 3960
9 27720
10 27720
11 27720
12 27720
13 27720
14 637560
15 8288280
16 240360120
17 240360120
18 240360120
19 240360120
20 240360120
21 240360120 

[2,4,12,60,60,120,360,3960,27720,27720,27720,
 27720,27720,637560,8288280,240360120,240360120,
 240360120,240360120,240360120,240360120]

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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