A115513 - OEIS

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A115513 as a triangular array

1

-1 1

0 0 1

0 0 0 1

1 -1 0 0 1

0 0 0 0 0 1

0 0 0 0 0 0 1

0 0 -1 0 0 0 0 1

0 0 0 0 0 0 0 0 1

0 0 0 0 0 0 0 0 0 1

0 0 0 -1 0 0 0 0 0 0 1

0 0 0 0 0 0 0 0 0 0 0 1

0 0 0 0 0 0 0 0 0 0 0 0 1

-1 1 0 0 -1 0 0 0 0 0 0 0 0 1

0 0 0 0 0 0 0 0 0 0 0 0 0 0

A115513 as a square array

1 -1 0 0 1 0 0 0 0 0 0 0 0 -1 0

1 0 0 -1 0 0 0 0 0 0 0 0 1 0

1 0 0 0 0 -1 0 0 0 0 0 0 0

1 0 0 0 0 0 0 -1 0 0 0 0

1 0 0 0 0 0 0 0 0 -1 0

1 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0

1 0 0 0 0 0 0

1 0 0 0 0 0

1 0 0 0 0

1 0 0 0

1 0 0

1 0

A115513 as an upper right triangle