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A197721 as a simple table

n a(n)
1 1
2 7
3 25
4 409
5 14185
6 1029761
7 168151040
8 60063611063
9 47206720536227
10 81729461999719503

[1,7,25,409,14185,1029761,168151040,60063611063,
 47206720536227,81729461999719503]

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Last modified July 12 22:46 EDT 2020. Contains 335669 sequences. (Running on oeis4.)