@Kitonum 

Hello, thank you for your help.  For the same question, if I want all solutions, how to write the code? Because your code just produce one solution.

Cheers

@Kitonum 

It is very helpful. Thank you very much.

@Carl Love 

Hello, thank you for your answer. I want ask why you do if n=20 then Soln[a,b,c]......  Why choosing n=20? Can you explain it for me?

Thank you 

@Carl Love 

Hello, thank you for your answer. I want ask why you do if n=20 then Soln[a,b,c]......  Why choosing n=20? Can you explain it for me?

Thank you 

Hi, thank you very much for help. I also want to ask you:  In the same question I asked, I make some changes,

1.Let a,b,c from -20 to 20 

2. t[n+1] still is integer but two successive terms  t[n] and t[n+1] are not zero

3.print(a,b,c) instead of list(a,b,c).

Then, how to do that question. I just start to learn Maple, please help. Thank you.

Hi, thank you very much for help. I also want to ask you:  In the same question I asked, I make some changes,

1.Let a,b,c from -20 to 20 

2. t[n+1] still is integer but two successive terms  t[n] and t[n+1] are not zero

3.print(a,b,c) instead of list(a,b,c).

Then, how to do that question. I just start to learn Maple, please help. Thank you.