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A053655 as a simple table

na(n)
11
21221
31233321
41234444321
51234555554321
61234566666654321
71234567777777654321
81234567888888887654321
91234567899999999987654321
101234567901111111110987654321
111234567901222222222220987654321
121234567901233333333333320987654321

[1,1221,1233321,1234444321,1234555554321,
 1234566666654321,1234567777777654321,
 1234567888888887654321,1234567899999999987654321,
 1234567901111111110987654321,
 1234567901222222222220987654321,
 1234567901233333333333320987654321]