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A270765 as a simple table

n a(n)
2 1
3 4
4 16
5 67
6 299
7 1429
8 7307
9 39848
10 230884
11 1416047
12 9160977
13 62316137
14 444424965
15 3314372728
16 25786012724
17 208842481687
18 1757367578867
19 15337268316933
20 138603393210479
21 1295082562497364
22 12494759080718152
23 124314054484739035
24 1274003246005735449

[1,4,16,67,299,1429,7307,39848,230884,1416047,
 9160977,62316137,444424965,3314372728,25786012724,
 208842481687,1757367578867,15337268316933,
 138603393210479,1295082562497364,
 12494759080718152,124314054484739035,
 1274003246005735449]

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)