1,2

a(n) are perfect squares for n = {1,4,5,7,...}. a(8) and a(9) are divisible by 16 = 2^4. Corresponding Fibonacci primes Fibonacci[Prime[Prime[a(n)]]] = {2,5,89,1597,99194853094755497,...} that is a subset of A093308[n]. Corresponding prime indices of Fibonacci primes Prime[Prime[a(n)]] = (3,5,11,17,83,431,509,130021,148091,433781,...}. Corresponding prime indices Prime[a(n)] = {2,3,5,7,23,83,97,12161,13681,36467,...} that are the primes in A119984[n] Numbers n such that Fibonacci[Prime[n]] is prime.

Cf. A000045, A119984, A083668, A093308, A075737, A001605, A006450, A005478, A001605, A030426.

Sequence in context: A088275 A014281 A086865 this_sequence A101135 A088220 A085612

Adjacent sequences: A122531 A122532 A122533 this_sequence A122535 A122536 A122537

hard,more,nonn

Alexander Adamchuk (alex(AT)kolmogorov.com), Sep 18 2006