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A009690 as a simple table

n a(n)
0 1
1 3
2 33
3 739
4 26913
5 1416995
6 101493889
7 9507242819
8 1129063338945
9 165774337045955
10 29468302949572705
11 6227421783562843427
12 1539946012373786340321
13 439696998663601508079587 

[1,3,33,739,26913,1416995,101493889,9507242819,
 1129063338945,165774337045955,29468302949572705,
 6227421783562843427,1539946012373786340321,
 439696998663601508079587]

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Last modified November 29 17:03 EST 2023. Contains 367445 sequences. (Running on oeis4.)