A249821 - OEIS

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A249821 as a triangular array

1

2 1

3 2 1

4 3 2 1

5 5 3 2 1

6 4 5 3 2 1

7 7 7 5 3 2 1

8 11 11 7 5 3 2 1

9 6 13 11 7 5 3 2 1

10 13 17 13 11 7 5 3 2 1

11 17 4 17 13 11 7 5 3 2 1

12 10 19 19 17 13 11 7 5 3 2 1

13 19 23 23 19 17 13 11 7 5 3 2 1

14 9 6 29 23 19 17 13 11 7 5 3 2 1

15 8 29 31 29 23 19 17 13 11 7 5 3 2 1

A249821 as a square array

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

1 2 3 5 4 7 11 6 13 17 10 19 9 8

1 2 3 5 7 11 13 17 4 19 23 6 29

1 2 3 5 7 11 13 17 19 23 29 31

1 2 3 5 7 11 13 17 19 23 29

1 2 3 5 7 11 13 17 19 23

1 2 3 5 7 11 13 17 19

1 2 3 5 7 11 13 17

1 2 3 5 7 11 13

1 2 3 5 7 11

1 2 3 5 7

1 2 3 5

1 2 3

1 2

1

A249821 as an upper right triangle