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A077555 as a simple table

n a(n)
0 4
1 24
2 216
3 2160
4 32400
5 810000
6 9525600
7 238140000
8 8334900000
9 408410100000
10 6051137400000
11 296505732600000
12 16307815293000000
13 1255701777561000000
14 151939915084881000000
15 1074848105961630000000
16 82763304159045510000000

[4,24,216,2160,32400,810000,9525600,238140000,
 8334900000,408410100000,6051137400000,
 296505732600000,16307815293000000,
 1255701777561000000,151939915084881000000,
 1074848105961630000000,82763304159045510000000]

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Last modified November 25 21:44 EST 2014. Contains 250010 sequences.