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A124800 as a triangular array

2
21
221
233-1
246-43
2510-1015-9
2615-2045-5423
2721-35105-189161-53
2828-56210-504644-424115
2936-84378-11341932-19081035-237
21045-120630-22684830-63605175-2370457

A124800 as a square array

22222222222
12345678910
136101521283645
-1-4-10-20-35-56-84-120
31545105210378630
-9-54-189-504-1134-2268
2316164419324830
-53-424-1908-6360
11510355175
-237-2370
457
22222222222
12345678910
136101521283645
-1-4-10-20-35-56-84-120
31545105210378630
-9-54-189-504-1134-2268
2316164419324830
-53-424-1908-6360
11510355175
-237-2370
457