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A180073 as a simple table

na(n)
20
32
412
556
6344
72486
819936
9179772
101800566
1119867748
12238718608
133105919304
1443474755484
15652732780048
1610446585803476
17177631436657888

[0,2,12,56,344,2486,19936,179772,1800566,19867748,
 238718608,3105919304,43474755484,652732780048,
 10446585803476,177631436657888]

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Last modified January 10 16:11 EST 2025. Contains 379723 sequences.
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