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A248810 as a triangular array

1
-11
3-31
-59-51
11-2319-71
-2157-6133-91
43-135179-12751-111
-85313-493433-22973-131
171-7111299-1359891-37599-151
-3411593-33094017-31411641-573129-171
683-35278211-1134310299-64232787-831163-191

A248810 as a square array

1-13-511-2143-85171-341683
1-39-2357-135313-7111593-3527
1-519-61179-4931299-33098211
1-733-127433-13594017-11343
1-951-229891-314110299
1-1173-3751641-6423
1-1399-5732787
1-15129-831
1-17163
1-19
1
1-13-511-2143-85171-341683
1-39-2357-135313-7111593-3527
1-519-61179-4931299-33098211
1-733-127433-13594017-11343
1-951-229891-314110299
1-1173-3751641-6423
1-1399-5732787
1-15129-831
1-17163
1-19
1