A140885 - OEIS

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A140885 as a triangular array

0

0 0

1 2 1

1 2 2 1

1 0 2 0 1

1 2 2 2 2 1

1 -1 1 0 1 -1 1

1 2 2 2 2 2 2 1

1 0 0 0 2 0 0 0 1

1 0 0 2 0 0 2 0 0 1

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

1 2 2 2 2 2 2 2 2 2 2 1

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

1 2 2 2 2 2 2 2 2 2 2 2 2 1

1 -1 1

A140885 as a square array

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

0 2 2 0 2 -1 2 0 0 -1 2 0 2 -1

1 2 2 2 1 2 0 0 1 2 -1 2 1

1 0 2 0 2 0 2 -1 2 0 2

1 2 1 2 2 0 1 2 1 2

1 -1 2 0 0 0 2 0 2

1 2 0 2 1 2 0 2

1 0 0 -1 2 0 2

1 0 1 2 1 2

1 -1 2 0 2

1 2 -1 2

1 0 2

1 2

1

A140885 as an upper right triangle