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A355008 as a triangular array

1
12
345
1279
127911
35681012
124791113
12479111314
356101215171920
12478911131416
1247891113141618
356101215171920212324

A355008 as a square array

113113113113
24225225225
5776446446
99877107710
111099128812
121111159915
131317111117
1419131319
20141420
161621
1823
24
113113113113
24225225225
5776446446
99877107710
111099128812
121111159915
131317111117
1419131319
20141420
161621
1823
24