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A303422 as a simple table

n a(n)
1 4
2 32
3 252
4 1985
5 15647
6 123337
7 972168
8 7662841
9 60400282
10 476088932
11 3752642337
12 29579189147
13 233149966025
14 1837741608616
15 14485501658565
16 114178052735590
17 899977648952776
18 7093830637396745
19 55915203194889879
20 440736480491065049

[4,32,252,1985,15647,123337,972168,7662841,
 60400282,476088932,3752642337,29579189147,
 233149966025,1837741608616,14485501658565,
 114178052735590,899977648952776,7093830637396745,
 55915203194889879,440736480491065049]

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Last modified September 27 07:28 EDT 2021. Contains 347673 sequences. (Running on oeis4.)