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A134542 as a triangular array

1
11
121
1221
13321
123321
1344321
13444321
134554321
1245554321

A134542 as a square array

1111111111
122323332
12334444
1234455
123455
12345
1234
123
12
1
1111111111
122323332
12334444
1234455
123455
12345
1234
123
12
1