login

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

A027893 as a simple table

na(n)
11
23
39
441
5123
6271
7369
8813
92439
1011111
1133333
1299999

[1,3,9,41,123,271,369,813,2439,11111,33333,99999]