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A153851 as a simple table

n a(n)
1 1
2 1
3 6
4 57
5 683
6 9474
7 145815
8 2430393
9 43202448
10 810629805
11 15938815794
12 326653743510
13 6949638584208
14 153009877730525
15 3477623225388063
16 81429702521625843
17 1961136442605508341
18 48513571089988199157

[1,1,6,57,683,9474,145815,2430393,43202448,
 810629805,15938815794,326653743510,6949638584208,
 153009877730525,3477623225388063,
 81429702521625843,1961136442605508341,
 48513571089988199157]

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Last modified November 30 13:47 EST 2021. Contains 349420 sequences. (Running on oeis4.)