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A000409 as a simple table

n a(n)
2 0
3 6
4 350
5 43260
6 14591171
7 14657461469
8 46173502811223
9 474928141312623525
10 16489412944755088235117
11 1985178211854071817861662307
12 846428472480689964807653763864449
13 1299141117072945982773752362381072143359
14 7268140170419155675761326840423792818571154945
15 149650282980396792665043455999899697765782372693740287 

[0,6,350,43260,14591171,14657461469,
 46173502811223,474928141312623525,
 16489412944755088235117,
 1985178211854071817861662307,
 846428472480689964807653763864449,
 1299141117072945982773752362381072143359,
 7268140170419155675761326840423792818571154945,
 14965028298039679266504345599989969776578237269374\
 0287]

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Last modified April 29 15:45 EDT 2024. Contains 372114 sequences. (Running on oeis4.)