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A235838 as a simple table

n a(n)
1 81
2 487
3 2581
4 12373
5 55929
6 241933
7 1015889
8 4174941
9 16895401
10 67647573
11 268781649
12 1062687069
13 4187377529
14 16469997477
15 64715520737
16 254249916141
17 999126102153
18 3928936941941
19 15463007464305
20 60919637465405

[81,487,2581,12373,55929,241933,1015889,4174941,
 16895401,67647573,268781649,1062687069,4187377529,
 16469997477,64715520737,254249916141,999126102153,
 3928936941941,15463007464305,60919637465405]

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Last modified May 3 18:51 EDT 2024. Contains 372222 sequences. (Running on oeis4.)