C:\test>817827
Took 1.622
Odd numbers in list: 4000
Pairs found: 99135

C:\test>817827-t -T=1
Took 1.790000
Odd numbers in list: 4000
Pairs found: 99135

C:\test>817827-t -T=2
Took 1.365000
Odd numbers in list: 4000
Pairs found: 99135

C:\test>817827-t -T=3
Took 1.047500
Odd numbers in list: 4000
Pairs found: 99135

C:\test>817827-t -T=4
Took 0.832500
Odd numbers in list: 4000
Pairs found: 99135