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A204002 as a triangular array

3
44
565
6776
78987
89101098
910111211109
1011121313121110
111213141514131211
12131415161615141312
1314151617181716151413
14151617181919

A204002 as a square array

34567891011121314
46789101112131415
57910111213141516
6810121314151617
79111315161718
8101214161819
91113151719
10121416
111315
1214
13
34567891011121314
46789101112131415
57910111213141516
6810121314151617
79111315161718
8101214161819
91113151719
10121416
111315
1214
13