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A257598 as a triangular array

1
11
211
4111
811116
-4111132
-162111164
-48811111128
-1283211111256-320
112-8111111512-768
352-482111111

A257598 as a square array

11248-4-16-48-128112352
111112832-8-48
111111112
11111111
16111111
3211111
641111
12825611
-3205121
-768
11248-4-16-48-128112352
111112832-8-48
111111112
11111111
16111111
3211111
641111
12825611
-3205121
-768