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

A272017 as a simple table

na(n)
01
14
228
3140
4620
52548
610276
740020
8157948
9627348
102499964
119980820
1239884668
13159461268
14637689724
152550448020

[1,4,28,140,620,2548,10276,40020,157948,627348,
 2499964,9980820,39884668,159461268,637689724,
 2550448020]