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A176890 as a triangular array

-1
10
100
1100
10000
111000
1000000
11010000
101000000
1100100000
10000000000
111101000000
1000000000000
11000010000000

A176890 as a square array

-11111111111111
0010101010101
000100100100
00001000100
0000010000
000000100
00000001
0000000
000000
00000
0000
000
00
0
-11111111111111
0010101010101
000100100100
00001000100
0000010000
000000100
00000001
0000000
000000
00000
0000
000
00
0