Share code logic for this pattern

Question

Input n : 6

21
11 20
10 12 19
4 9 13 18
3 5 8 14 17
1 2 6 7 15 16

Could you please help me out

Answer 1

Your attempts?

Answer 2

A͢J I tried a lot but it's not happening

Answer 3

Yaroslav Vernigora
#include <stdio.h>

int main() {

int n=6,i,j,tot=0;

for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{
tot++;
}
}

for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
{
printf("%d ",tot--);
}
printf("\n");
}

return 0;
}

Answer 4

Hi! show your code, let it even be wrong if you tried.