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A258850 as a triangular array

0
01
002
0013
00024
000145
0000436
00004277
000041448
00004044129
00004044201210
0000404432201111
0000404480325512

A258850 as a square array

0000000000000
100000000000
21000000000
3210000000
444444444
53210000
6744444
744444
812203280
9122032
10115
115
12
0000000000000
100000000000
21000000000
3210000000
444444444
53210000
6744444
744444
812203280
9122032
10115
115
12