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A190342 as a simple table

n a(n)
1 4
2 12
3 52
4 308
5 2520
6 29268
7 471012
8 10566004
9 331575100
10 14510475976
11 885694047808
12 75478844279780
13 8975435807171244
14 1489232331953993836
15 344849471434261285096
16 111434896145450843664604

[4,12,52,308,2520,29268,471012,10566004,331575100,
 14510475976,885694047808,75478844279780,
 8975435807171244,1489232331953993836,
 344849471434261285096,111434896145450843664604]

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Last modified March 29 08:44 EDT 2024. Contains 371267 sequences. (Running on oeis4.)