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A349534 as a simple table

n a(n)
0 1
1 4
2 21
3 138
4 1063
5 9075
6 82770
7 789204
8 7766721
9 78267306
10 803447526
11 8371413999
12 88300495746
13 941004684748
14 10116276976218
15 109578418285452
16 1194764348642313
17 13102287157827918
18 144422108994233625
19 1599198859915070640
20 17780781456147340764

[1,4,21,138,1063,9075,82770,789204,7766721,
 78267306,803447526,8371413999,88300495746,
 941004684748,10116276976218,109578418285452,
 1194764348642313,13102287157827918,
 144422108994233625,1599198859915070640,
 17780781456147340764]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)