42979

Properties

Appears in sequences

• a(n+1) = Sum_{k=0..floor(n/4)} a(k) * a(n-k).at n=21A030034
• Number of refactorable integers (A033950) of binary order (A029837) n.at n=21A036761
• A078152(n!).at n=11A078155
• Average of row n of A082259.at n=30A082262
• Primes in which odd positioned digits are composite and even positioned digits are primes. The least significant digit is the taken to be the first digit.at n=30A083821
• a(n) = prime(prime(Fibonacci(n))).at n=14A093309
• Primes of the form n^3 + 3*n - 1.at n=7A180276
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 57", based on the 5-celled von Neumann neighborhood.at n=39A270077
• Primes p such that, if q is the next prime, p + q^2 is a prime times a power of 10.at n=40A352837
• Prime numbersat n=4493