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A124540 as a triangular array

1
10
110
1220
13750
141526160
152673107620
16401563694862740
17572859391959239813320
187747019955764109121266869780
19100721375613976362486354370863388730

A124540 as a square array

11111111111
0123456789
0271526405777100
052673156285470721
01610736993919953756
0624861959576413976
027423981091236248
013321266863543
0697870863
038873
0
11111111111
0123456789
0271526405777100
052673156285470721
01610736993919953756
0624861959576413976
027423981091236248
013321266863543
0697870863
038873
0