A207409 - OEIS

A207409 as a triangular array

1

1 2

1 1 2

1 2 1 4

1 1 3 6 2

1 2 2 3 6 4

1 1 4 5 8 6 2

1 2 3 2 1 10 6 4

1 2 4 1 7 3 12 10 6

1 1 1 3 9 5 14 12 8 2

1 1 2 2 4 11 3 18 14 8 6

1 2 1 6 8 2 7 3 18 12 10 4

1 1 3 1 10 4 9 5 20 14 12 6 2

1

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

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

2 1 3 2 4 3 4 1 2 1 3

4 6 3 5 2 1 3 2 6 1

2 6 8 1 7 9 4 8 10

4 6 10 3 5 11 2 4

2 6 12 14 3 7 9

4 10 12 18 3 5

6 8 14 18 20

2 8 12 14

6 10 12

4 6

2