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A030444 as a simple table

n a(n)
1 1
2 4
3 28
4 234
5 2162
6 20972
7 209608
8 2135572
9 22049959
10 229939414
11 2416816416
12 25569786440
13 272057195864

[1,4,28,234,2162,20972,209608,2135572,22049959,
 229939414,2416816416,25569786440,272057195864]

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Last modified May 13 00:07 EDT 2024. Contains 372497 sequences. (Running on oeis4.)