OFFSET
1,1
COMMENTS
Excluding the term a(4)=23, primes p such that p(n) is not a sum of two squares but p(n+1) is a sum of two squares.
FORMULA
5 is in the sequence because F(2)*F(3)+F(4) = 1*2+3=5.
11 is in because F(3)*F(4)+F(5) = 2*3+5 = 11
23 is in because F(4)*F(5)+F(6) = 3*5+8 = 23
PROG
(PARI) lista(nn) = {for (n=1, nn, if (isprime(p=fibonacci(n)*fibonacci(n+1) +fibonacci(n+2)), print1(p, ", ")); ); } \\ Michel Marcus, Jun 03 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Jun 11 2004
EXTENSIONS
More terms from Michel Marcus, Jun 03 2013
STATUS
approved