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A096198 as a triangular array

0
11
222
2332
33433
344443
3454543
34555543
445565544
4555665554
45656665654
456666666654
4566766676654
45667766776654

A096198 as a square array

01223333444444
1233444455555
234455556666
23445555666
3455666677
345566667
34556666
3455666
456677
45667
4566
456
45
4
01223333444444
1233444455555
234455556666
23445555666
3455666677
345566667
34556666
3455666
456677
45667
4566
456
45
4