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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A220530 as a simple table

na(n)
12
227
3274
42660
523948
6204634
71697940
813869434
9112203992
10902932630
117245817986
1258059100355

[2,27,274,2660,23948,204634,1697940,13869434,
 112203992,902932630,7245817986,58059100355]