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A376167 as a triangular array

4
55
676
7887
891098
9101111109
10111313131110
1112141515141211
121315161716151312
13141618191918161413
1415171920222019171514
151618212223232221181615

A376167 as a square array

456789101112131415
578910111213141516
681011131415161718
7911131516181921
810131517192022
9111416192223
101215182023
1113161922
12141721
131518
1416
15
456789101112131415
578910111213141516
681011131415161718
7911131516181921
810131517192022
9111416192223
101215182023
1113161922
12141721
131518
1416
15