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A377000 as a triangular array

1
21
331
4541
57861
69121381
711162121121
81320293634161
9152437526355241
10172845689410889321
1119325384126169189144481
12213661100158232305324233641

A377000 as a square array

123456789101112
13579111315171921
14812162024283236
1613212937455361
182136526884100
112346394126158
11655108169232
12489189305
132144324
148233
164
1
123456789101112
13579111315171921
14812162024283236
1613212937455361
182136526884100
112346394126158
11655108169232
12489189305
132144324
148233
164
1