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A260847 as a simple table

n a(n)
1 1
2 3
3 13
4 121
5 1538
6 28010
7 618243
8 16223774
9 490103223
10 16761330464
11 639968394245
12 26985325092730
13 1245476031528966
14 62451726249369666
15 3380720083302727868
16 196504354812897344692
17 12206388155663897395208
18 806977883622439156487124
19 56573396893789449427353609
20 4192088709829643732598955348

[1,3,13,121,1538,28010,618243,16223774,490103223,
 16761330464,639968394245,26985325092730,
 1245476031528966,62451726249369666,
 3380720083302727868,196504354812897344692,
 12206388155663897395208,806977883622439156487124,
 56573396893789449427353609,
 4192088709829643732598955348]

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Last modified February 5 09:25 EST 2023. Contains 360084 sequences. (Running on oeis4.)