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A124844 as a triangular array

1
12
14-1
16-33
18-612-4
110-1030-207
112-1560-6042-11
114-21105-140147-7718
116-28168-280392-308144-29
118-36252-504882-924648-26147
120-45360-8401764-23102160-1305470-76

A124844 as a square array

11111111111
2468101214161820
-1-3-6-10-15-21-28-36-45
3123060105168252360
-4-20-60-140-280-504-840
7421473928821764
-11-77-308-924-2310
181446482160
-29-261-1305
47470
-76
11111111111
2468101214161820
-1-3-6-10-15-21-28-36-45
3123060105168252360
-4-20-60-140-280-504-840
7421473928821764
-11-77-308-924-2310
181446482160
-29-261-1305
47470
-76