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A181197 as a simple table

n a(n)
1 1
2 1
3 4
4 29
5 290
6 3532
7 49100
8 750325
9 12310294
10 213446666
11 3868253164
12 72686739116
13 1407643591804
14 27964937748724
15 567853691242796
16 11751537336221989
17 247263499985110046
18 5279409371079693454
19 114199628255736623996
20 2499214354674134770354

[1,1,4,29,290,3532,49100,750325,12310294,
 213446666,3868253164,72686739116,1407643591804,
 27964937748724,567853691242796,11751537336221989,
 247263499985110046,5279409371079693454,
 114199628255736623996,2499214354674134770354]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)