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  1. T831(n)=
  2. {
  3. my(s=Mod(2*polchebyshev(12,1,2),8*3^n-1)); 
  4. for(i=1,n-1, s=s^3-3*s); 
  5. s==4
  6. }
Success #stdin #stdout #stderr 0s 9328KB
comments (?)
stdin 
T831(10)
stdout 
1
stderr 
  ***   Warning: can't expand ~.
  ***   Warning: can't expand ~.
https://ideone.com/C09SUh
language:
PARI/GP (2.5.1)
created:
10 years ago
visibility:
public

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