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A112320 as a simple table

n a(n)
1 1
2 3
3 12
4 70
5 560
6 5810
7 74760
8 1153740
9 20817588
10 430604724
11 10052947476
12 261595087182
13 7509722346204
14 235808741944100
15 8040824716606176
16 295914258931377276
17 11690732617035570008
18 493527339623630078552 

[1,3,12,70,560,5810,74760,1153740,20817588,
 430604724,10052947476,261595087182,7509722346204,
 235808741944100,8040824716606176,
 295914258931377276,11690732617035570008,
 493527339623630078552]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)