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A235417 as a simple table

n a(n)
1 81
2 432
3 2304
4 9504
5 39204
6 138402
7 488601
8 1553877
9 4941729
10 14587326
11 43059844
12 120242088
13 335768976
14 898407396
15 2403842841
16 6218691273
17 16087624569
18 40503112884
19 101972926224
20 251077339656
21 618201642564
22 1494166176558

[81,432,2304,9504,39204,138402,488601,1553877,
 4941729,14587326,43059844,120242088,335768976,
 898407396,2403842841,6218691273,16087624569,
 40503112884,101972926224,251077339656,
 618201642564,1494166176558]

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Last modified January 27 09:09 EST 2020. Contains 331293 sequences. (Running on oeis4.)