A337791 6-Wall-Sun-Sun primes: primes p such that p^2 divides F_6(A175185(p)), where F_6(i) is the i-th 6-Fibonacci number.
191, 643, 134339, 25233137
Offset: 1
Links
- Zakariae Bouazzaoui, On Periods of Fibonacci Sequences and Real Quadratic p-rational Fields, Fibonacci Quart. 58 (2020), no. 5, 103-110. See p. 7.
- Wikipedia, Wall-Sun-Sun prime
Programs
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PARI
my(b=6); forprime(p=2, , if( (([0, 1; 1, b]*Mod(1, p^2))^(p-kronecker(b^2+4, p)))[1, 2]==0, print1(p, ", "); ); );