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A136793 as a simple table

n a(n)
1 4
2 16
3 104
4 752
5 5996
6 50512
7 444256
8 4027360
9 37383044
10 353486320
11 3393093696
12 32976302800
13 323839605124
14 3208549483216
15 32033691247528
16 321955764477936
17 3254812520854980
18 33075467402453872
19 337670437247448728
20 3461635652745799136
21 35620112071990294784

[4,16,104,752,5996,50512,444256,4027360,37383044,
 353486320,3393093696,32976302800,323839605124,
 3208549483216,32033691247528,321955764477936,
 3254812520854980,33075467402453872,
 337670437247448728,3461635652745799136,
 35620112071990294784]

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)