A058398 - OEIS

A058398 as a triangular array

1

1 1

1 1 1

1 1 2 1

1 1 2 2 1

1 1 2 3 3 1

1 1 2 3 4 3 1

1 1 2 3 5 5 4 1

1 1 2 3 5 6 7 4 1

1 1 2 3 5 7 9 8 5 1

1 1 2 3 5 7 10 11 10 5 1

1 1 2 3 5 7 11 13 15 12 6 1

1 1 2 3 5 7 11 14 18 18 14 6 1

1 1 2 3 5 7 11

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

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

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

1 2 3 3 3 3 3 3 3 3 3

1 3 4 5 5 5 5 5 5 5

1 3 5 6 7 7 7 7 7

1 4 7 9 10 11 11 11

1 4 8 11 13 14

1 5 10 15 18

1 5 12 18

1 6 14

1 6

1