A050205 - OEIS

A050205 as a triangular array

1

1 2

1 1 2

1 2 2 3

1 1 1 2 2

1 2 3 2 3 3

1 1 2 1 2 2 3

1 2 1 2 2 2 3 3

1 1 2 2 1 2 2 3 3

1 2 2 2 3 2 3 4 4 4

1 1 1 1 2 1 2 2 2 2 3

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

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

1 2 1 2 1 2 3 2 2 2 3

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 2

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

3 2 2 1 2 2 2 1 3 2 2

2 3 2 2 1 3 2 3 2 1

3 2 2 2 2 1 3 3 2

3 3 2 3 2 2 1 3

3 3 4 2 3 2 2

3 4 2 3 2 2

4 2 3 3 2

3 3 3 3

4 3

4