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A305360 as a triangular array

1
11
141
1771
11313131
1262121261
149272627491
19953646453991
119499115137115991941
13871972112712712111973871
17733714396565386564393717731
11538713870

A305360 as a square array

111111111111
147132649991943877731538
171321275399197371713
113212664115211439870
1262764137271656
14953115271538
19999211656
1194197439
1387371
1773
1
111111111111
147132649991943877731538
171321275399197371713
113212664115211439870
1262764137271656
14953115271538
19999211656
1194197439
1387371
1773
1