triangular arrays

[kbj]

please help complete 1 pattern and check 2
1 1 1
1 1 1 1 1 1
1 ____ 1 1 2 1 1 2 1
1 9 9 1 1 3 3 1 1 3 3 1
1 12 18 12 1 1 4 12 4 1 1 4 6 4 1
1 15 30 30 15 1 1 5 48 48 5 1 1 5 1 1 5 1
1 18 45 60 45 19 1 1 6 53 96 53 6 1 1 6 6 2 6 6 1
1 7 12 8 12 7 1

 

[Deleted member 4993]

please help complete 1 pattern and check 2
1 1 1
1 1 1 1 1 1
1 ____ 1 1 2 1 1 2 1
1 9 9 1 1 3 3 1 1 3 3 1
1 12 18 12 1 1 4 12 4 1 1 4 6 4 1
1 15 30 30 15 1 1 5 48 48 5 1 1 5 1 1 5 1
1 18 45 60 45 19 1 1 6 53 96 53 6 1 1 6 6 2 6 6 1
1 7 12 8 12 7 1

Hint:

The 2 nd number of 4th line is 3*3

The 2 nd number of 5th line is 3*4

The 2 nd number of 6th line is 3*5

The 2 nd number of 7th line is 3*6

so

The 2 nd number of 3rd line should be ____