A107435 - OEIS

A107435 as a triangular array

1

1 1

1 2 1

1 1 2 1

1 2 3 2 1

1 1 1 2 2 1

1 2 2 3 3 2 1

1 1 3 1 4 2 2 1

1 2 1 2 3 2 3 2 1

1 1 2 2 1 3 3 2 2 1

1 2 3 3 2 3 4 4 3 2 1

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

1 2 2 2 4 2 3 5 3 3 3 2 1

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

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 3 1 2 3 1 2 3 1 2 3

1 2 2 3 1 2 2 3 1 2 2

1 2 3 4 3 1 2 3 4 3

1 2 2 2 3 3 1 2 2

1 2 3 3 4 4 3 1

1 2 2 4 2 5 3

1 2 3 2 3 4

1 2 2 3 3

1 2 3 4

1 2 2

1 2

1