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A167404 as a triangular array

1
11
121
2121
13121
323321
2141321
14244321
451514321
3352514321
22662554321
563366154321
1171726154321
67473726654321

A167404 as a square array

11121321432516
1213214532617
121342156374
12314526317
1234152673
123415627
12345162
1234516
123456
12345
1234
123
12
1
11121321432516
1213214532617
121342156374
12314526317
1234152673
123415627
12345162
1234516
123456
12345
1234
123
12
1