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A230920 as a simple table

n a(n)
1 0
2 12
3 54
4 432
5 3108
6 22428
7 162504
8 1175592
9 8507376
10 61562808
11 445491480
12 3223753560
13 23328341064
14 168813022728
15 1221597213768
16 8839956302856
17 63969389202792
18 462907576993032
19 3349780692313320
20 24240326242963080

[0,12,54,432,3108,22428,162504,1175592,8507376,
 61562808,445491480,3223753560,23328341064,
 168813022728,1221597213768,8839956302856,
 63969389202792,462907576993032,3349780692313320,
 24240326242963080]

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Last modified May 4 08:39 EDT 2024. Contains 372230 sequences. (Running on oeis4.)