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A335117 as a simple table

n a(n)
1 1
2 3
3 25
4 241
5 505
6 65521
7 131041
8 171865
9 138181681
10 6814407601
11 20174525281
12 45185409361
13 558781423201
14 685933859521
15 2601256998740401
16 4578654981700801
17 15571124394460034401
18 375159113055066740401
19 124708934978441512498801
20 127589793288205521873601
21 8644416283014847832296801
22 29217965124687229769336641

[1,3,25,241,505,65521,131041,171865,138181681,
 6814407601,20174525281,45185409361,558781423201,
 685933859521,2601256998740401,4578654981700801,
 15571124394460034401,375159113055066740401,
 124708934978441512498801,127589793288205521873601,
 8644416283014847832296801,
 29217965124687229769336641]

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Last modified June 14 08:31 EDT 2021. Contains 345018 sequences. (Running on oeis4.)