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A180918 as a triangular array

0
01
011
0211
02211
032311
0333311
04363411
044664411
054106104511
055101010105511
06515102010155611
0661515202015156611

A180918 as a square array

0000000000000
112233445566
11223344556
11336610101515
113366101015
114410102020
1144101020
11551515
115515
1166
116
11
1
0000000000000
112233445566
11223344556
11336610101515
113366101015
114410102020
1144101020
11551515
115515
1166
116
11
1