A230417 - OEIS

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A230417 as a triangular array

0

1 0

1 2 0

2 1 1 0

1 2 1 2 0

2 1 2 1 1 0

1 2 2 3 2 3 0

2 1 3 2 3 2 1 0

2 3 1 2 2 3 1 2 0

3 2 2 1 3 2 2 1 1 0

2 3 2 3 1 2 1 2 1 2 0

3 2 3 2 2 1 2 1 2 1 1 0

1 2 2 3 2 3 1 2 2 3 2 3 0

2 1 3 2 3 2 2 1 3 2 3 2 1 0

2 3 1 2 2 3 2 3 1 2 2 3 1 2 0

A230417 as a square array

0 1 1 2 1 2 1 2 2 3 2 3 1 2 2

0 2 1 2 1 2 1 3 2 3 2 2 1 3

0 1 1 2 2 3 1 2 2 3 2 3 1

0 2 1 3 2 2 1 3 2 3 2 2

0 1 2 3 2 3 1 2 2 3 2

0 3 2 3 2 2 1 3 2 3

0 1 1 2 1 2 1 2 2

0 2 1 2 1 2 1 3

0 1 1 2 2 3 1

0 2 1 3 2 2

0 1 2 3 2

0 3 2 3

0 1 1

0 2

0

A230417 as an upper right triangle