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A157522 as a triangular array

1
11
111
1221
13131
132231
1331331
13422431
135313531
1354224531
13553135531
135642246531
1357531357531
13576422467531

A157522 as a square array

11111111111111
1123333333333
121234555555
13212345677
1332123456
134321234
13543212
1355432
135654
13576
1357
135
13
1
11111111111111
1123333333333
121234555555
13212345677
1332123456
134321234
13543212
1355432
135654
13576
1357
135
13
1