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A122649 as a simple table

n a(n)
1 0
2 1
3 7
4 57
5 561
6 6555
7 89055
8 1381905
9 24137505
10 468934515
11 10033419375
12 234484536825
13 5943863027025
14 162446292283275
15 4761954230608575
16 149048910271886625
17 4961463912662882625
18 175022432901300859875

[0,1,7,57,561,6555,89055,1381905,24137505,
 468934515,10033419375,234484536825,5943863027025,
 162446292283275,4761954230608575,
 149048910271886625,4961463912662882625,
 175022432901300859875]

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Last modified January 24 19:19 EST 2020. Contains 331211 sequences. (Running on oeis4.)