A221108 - OEIS

A221108 as a triangular array

1

1 2

3 4 3

4 4 6 4

4 8 7 7 5

6 10 11 10 10 6

7 12 14 14 13 12 7

7 12 17 18 19 16 13 8

9 16 19 23 24 24 19 16 9

10 18 24 28 28 30 28 22 18 10

10 20 27 32 32 34 35 31 25 19 11

12 20 30 32 40 40 42 40 34 28 22 12

13

1 1 3 4 4 6 7 7 9 10 10 12 13

2 4 4 8 10 12 12 16 18 20 20

3 6 7 11 14 17 19 24 27 30

4 7 10 14 18 23 28 32 32

5 10 13 19 24 28 32 40

6 12 16 24 30 34 40

7 13 19 28 35 42

8 16 22 31 40

9 18 25 34

10 19 28

11 22

12