18069

Appears in sequences

• Spiral sieve using Fibonacci numbers.at n=20A005623
• Numbers k such that Fibonacci(prime(k)) is prime.at n=35A119984
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1100-0111-0100 pattern in any orientation.at n=15A146465
• Run length of the n-th run of Fibonacci composites.at n=32A182600
• G.f.: Sum_{n=-oo..+oo} x^(n*(n+1)/2) * C(x)^(3*n-3), where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).at n=40A355348
• The fixed points of A355702.at n=45A356017
• G.f. satisfies A(x) = 1 + x*A(x)^3 / (1 - x*A(x)^3)^2.at n=6A367280