56563

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 35 ones.at n=24A031803
• Numbers n such that n + sum of prime factors of n = (n+1) + sum of prime factors of (n+1).at n=36A075654
• Structured meta-anti-prism numbers, the n-th number from a structured n-gonal anti-prism number sequence.at n=18A100185
• a(n) = 4*a(n-1) - 3*a(n-2) - a(n-3), with a(0)=0, a(1)=0 and a(2)=1.at n=12A215404
• a(n) = A(n)*7^(-floor(n+1)/3), where A(n) = 7*A(n-1) - 14*A(n-2) + 7*A(n-3) with A(0)=0, A(1)=1, A(2)=7.at n=17A217444
• Sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1.at n=38A228126
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) - b(n-2) - 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=19A294425
• Numbers k such that s(k) = s(k+1), where s(k) is A059975.at n=24A327250
• Numbers k such that A008475(k)+1 = A008475(k+1).at n=41A333801
• Numbers k such that A181894(k)+1 = A181894(k+1).at n=37A333802