A131844 - OEIS

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A131844 as a triangular array

1

4 4

7 1 7

10 1 1 10

13 1 1 1 13

16 1 1 1 1 16

19 1 1 1 1 1 19

22 1 1 1 1 1 1 22

25 1 1 1 1 1 1 1 25

28 1 1 1 1 1 1 1 1 28

31 1 1 1 1 1 1 1 1 1 31

34 1 1 1 1 1 1 1 1 1 1 34

37 1 1 1 1 1 1 1 1 1 1 1 37

40 1 1 1 1 1 1 1 1 1 1 1 1 40

A131844 as a square array

1 4 7 10 13 16 19 22 25 28 31 34 37 40

4 1 1 1 1 1 1 1 1 1 1 1 1

7 1 1 1 1 1 1 1 1 1 1 1

10 1 1 1 1 1 1 1 1 1 1

13 1 1 1 1 1 1 1 1 1

16 1 1 1 1 1 1 1 1

19 1 1 1 1 1 1 1

22 1 1 1 1 1 1

25 1 1 1 1 1

28 1 1 1 1

31 1 1 1

34 1 1

37 1

40

A131844 as an upper right triangle