A097847 - OEIS

A097847 as a triangular array

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1 1

1 2 1

1 1 2 1

1 2 2 3 1

1 1 1 2 2 1

1 2 3 2 3 3 1

1 1 2 1 2 2 3 1

1 2 1 2 2 2 3 3 1

1 1 2 2 1 2 2 3 3 1

1 2 2 2 3 2 3 4 4 4 1

1 1 1 1 2 1 2 2 2 2 3 1

1 2 3 3 3 3 2 3 3 3 3 4 1

1 1 2 2 2 3 1 2

1 1 1 1 1 1 1 1 1 1 1 1 1 1

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

1 2 2 1 3 2 1 2 2 1 3 2

1 3 2 2 1 2 2 2 1 3 2

1 2 3 2 2 1 3 2 3 2

1 3 2 2 2 2 1 3 3

1 3 3 2 3 2 2 1

1 3 3 4 2 3 2

1 3 4 2 3

1 4 2 3

1 3 3

1 4

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