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A123956 as a triangular array

-1
11
-1-2-2
1-344
-148-8-8
15-12-201616
-1-6-183248-32-32
1-72456-80-1126464
-1832-80-160192256-128-128
19-40-120240432-448-576256256
-1-10-50160400-672-112010241280-512-512

A123956 as a square array

-11-11-11-11-11-1
1-2-345-6-789-10
-248-12-182432-40-50
4-8-203256-80-120160
-81648-80-160240400
16-32-112192432-672
-3264256-448-1120
64-128-5761024
-1282561280
256-512
-512
-11-11-11-11-11-1
1-2-345-6-789-10
-248-12-182432-40-50
4-8-203256-80-120160
-81648-80-160240400
16-32-112192432-672
-3264256-448-1120
64-128-5761024
-1282561280
256-512
-512