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A322890 as a simple table

n a(n)
0 1
1 20
2 799
3 31940
4 1276801
5 51040100
6 2040327199
7 81562047860
8 3260441587201
9 130336101440180
10 5210183616019999
11 208277008539359780
12 8325870157958371201
13 332826529309795488260
14 13304735302233861159199
15 531856585560044650879700

[1,20,799,31940,1276801,51040100,2040327199,
 81562047860,3260441587201,130336101440180,
 5210183616019999,208277008539359780,
 8325870157958371201,332826529309795488260,
 13304735302233861159199,531856585560044650879700]

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