A143309 - OEIS

A143309 as a triangular array

1

3 2

5 3 3

8 6 4 4

9 5 5 5 5

15 13 9 6 6 6

13 7 7 7 7 7 7

20 16 12 12 8 8 8 8

21 15 15 9 9 9 9 9 9

27 23 15 15 15 10 10 10 10 10

21 11 11 11 11 11 11 11 11 11 11

40 36 32 26 18 18 12 12 12 12 12 12

25 13 13 13 13 13 13 13 13 13 13 13 13

1 3 5 8 9 15 13 20 21 27 21 40 25

2 3 6 5 13 7 16 15 23 11 36 13

3 4 5 9 7 12 15 15 11 32 13

4 5 6 7 12 9 15 11 26 13

5 6 7 8 9 15 11 18 13

6 7 8 9 10 11 18 13

7 8 9 10 11 12 13

8 9 10 11 12 13

9 10 11 12 13

10 11 12 13

11 12 13

12 13

13