33889

Properties

Appears in sequences

• a(n) = ceiling(a(n-1)/2) + a(n-2) with a(0)=0 and a(1)=1.at n=42A064651
• Prime sums of 4 positive 5th powers.at n=21A123033
• Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155287
• Primes p of the form |prime(n+2)^2-prime(n+1)^2-prime(n)^2|, (absolute values).at n=20A176134
• Prime p such that p^5 + p^3 + p - 4 and p^5 + p^3 + p + 4 are primes.at n=29A243900
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 515", based on the 5-celled von Neumann neighborhood.at n=32A272707
• a(n) is the least prime p such that the orderly concatenation of the n successive powers of p yields a prime number; a(n)=0 if n is a multiple of 6.at n=47A292163
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = 5.at n=25A341079
• Value of prime number D for incrementally largest values of minimal y satisfying the equation x^2-D*y^2=5.at n=22A341081
• The primes associated with A239727.at n=10A342364
• The primes associated with A239800 (1 if A239800(n) = 0).at n=23A342365
• a(n) = floor(x*a(n-1)) for n > 0 where x = (5+3*sqrt(5))/2, a(0) = 1.at n=6A370175
• a(n) is the least k such that 2^k begins with n!.at n=8A374923
• Primes having only {3, 8, 9} as digits.at n=20A385792
• Primes having only {0, 3, 8, 9} as digits.at n=39A386069
• Primes having only {3, 6, 8, 9} as digits.at n=43A386186
• Prime numbersat n=3629