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A178870 as a triangular array

1
10-1
100-301
1000-50050-1
10000-70001300-701
100000-9000025000-250090-1
1000000-1100000410000-630004100-1101
10000000-130000006100000-1290000129000-6100130-1

A178870 as a square array

110100100010000100000100000010000000
-1-30-500-7000-90000-1100000-13000000
1501300250004100006100000
-1-70-2500-63000-1290000
1904100129000
-1-110-6100
1130
-1
110100100010000100000100000010000000
-1-30-500-7000-90000-1100000-13000000
1501300250004100006100000
-1-70-2500-63000-1290000
1904100129000
-1-110-6100
1130
-1