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A216368 as a triangular array

1
11
122
1344
14799
1511172020
161530454848
17205092113115115
182677182262283286286
1932113342591691717719719
11039156601126316811815183818421842

A216368 as a square array

11111111111
12345678910
247111520263239
4917305077113156
9204592182342601
20481132625911263
481152836911681
1152867171815
2867191838
7191842
1842
11111111111
12345678910
247111520263239
4917305077113156
9204592182342601
20481132625911263
481152836911681
1152867171815
2867191838
7191842
1842