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A081454 as a triangular array

1
14
128
1236
12346
123469
12356810
123456810
1234568910
123456791014
12345789101214
123456789121415
12345678910111422

A081454 as a square array

1111111111111
422222222222
83333333333
6445444444
666555555
98666766
10887877
1099988
10101099
14121210
141411
1514
22
1111111111111
422222222222
83333333333
6445444444
666555555
98666766
10887877
1099988
10101099
14121210
141411
1514
22