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A237227 as a simple table

n a(n)
1 81
2 268
3 928
4 2784
5 9628
6 28912
7 100008
8 300256
9 1038560
10 3118208
11 10785696
12 32383104
13 112011072
14 336303872
15 1163253760
16 3492571136
17 12080581376
18 36270926848
19 125458829824
20 376679553024
21 1302910621696
22 3911879237632

[81,268,928,2784,9628,28912,100008,300256,1038560,
 3118208,10785696,32383104,112011072,336303872,
 1163253760,3492571136,12080581376,36270926848,
 125458829824,376679553024,1302910621696,
 3911879237632]

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)