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A119160 as a simple table

na(n)
16
266
3666
4426426
5266262426
622464262666
746624464466426
8644644226644644222426
946424226426466426446424262644446
10626644642222466644646226466422666

[6,66,666,426426,266262426,22464262666,
 46624464466426,644644226644644222426,
 46424226426466426446424262644446,
 626644642222466644646226466422666]