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A270369 as a simple table

n a(n)
0 1
1 2
2 18
3 162
4 1458
5 13122
6 118098
7 1062882
8 9565938
9 86093442
10 774840978
11 6973568802
12 62762119218
13 564859072962
14 5083731656658
15 45753584909922
16 411782264189298
17 3706040377703682
18 33354363399333138
19 300189270593998242
20 2701703435345984178

[1,2,18,162,1458,13122,118098,1062882,9565938,
 86093442,774840978,6973568802,62762119218,
 564859072962,5083731656658,45753584909922,
 411782264189298,3706040377703682,
 33354363399333138,300189270593998242,
 2701703435345984178]

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Last modified September 25 00:48 EDT 2020. Contains 337333 sequences. (Running on oeis4.)