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A161780 as a triangular array

1
-21
-211
1001
-2-2101
400001
-2-201001
00-200001
110010001
4000000001
-2-2-2-20100001
-200000000001
-2400001000001
401

A161780 as a square array

1-2-21-24-2014-2-2-24
110-20-2010-2040
10100-200-2001
1001000-200
100010000
10000100
1000001
100000
10000
1000
100
10
1
1-2-21-24-2014-2-2-24
110-20-2010-2040
10100-200-2001
1001000-200
100010000
10000100
1000001
100000
10000
1000
100
10
1