24439

Properties

Appears in sequences

• a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +1 for 0, +3 for 1.at n=7A028894
• Denominators of continued fraction convergents to sqrt(667).at n=8A042283
• Numbers whose base-4 representation contains exactly four 1's and four 3's.at n=10A045133
• Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 14 (most significant digit on right).at n=13A061967
• Numbers k such that T(k) = T(A072522(k)) + T(A072522(k+1)), T(i) being the triangular numbers.at n=27A080824
• Primes p such that denominator of Sum_{k=1..p-1} 1/k^2 is a square and denominator Sum_{k=1..p-1} 1/k^3 is a cube and denominator Sum_{k=1..p-1} 1/k^4 is a fourth power.at n=20A127062
• Primes congruent to 39 mod 61.at n=39A142837
• Primes p such that both pi(p) and the concatenation of pi(p) and p are prime, where pi is the prime counting function.at n=37A155032
• Primes p such that p^3-2 and p^2-2 are both primes.at n=29A242979
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 451", based on the 5-celled von Neumann neighborhood.at n=34A272258
• Numbers which are palindromic in their Elias delta code representation.at n=44A281380
• The smallest number from the n-membered group of single (non-twin) primes.at n=27A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=28A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=29A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=30A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=31A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=32A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=33A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=34A338386
• The smallest number from the n-membered group of single (non-twin) primes.at n=35A338386