867638domain: NAppears in sequencesa(n) = floor(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n).at n=45A134791a(n) = round(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n).at n=45A134792Number of unrooted unlabeled 4-cactus graphs on 3n+1 nodes.at n=12A287892