842751

Appears in sequences

• Numbers that are the sum of 2 cubes in more than 1 way (primitive solutions).at n=20A018850
• 7th-order Patalan numbers (generalization of Catalan numbers).at n=5A025752
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 68.at n=26A031746
• a(1)=10; if n = Product p_i^e_i, n > 1, then a(n) = Product p_{i+1}^e_i * Product p_{i+3}^e_i.at n=39A045973
• a(n) = 729*n^2 + 27.at n=34A158645
• Integers n such that each of n, 2n and 3n is a sum of 2 distinct positive cubes.at n=15A191383
• Prime factorization representation of Fibonacci polynomials: a(0) = 1, a(1) = 2, and for n > 1, a(n) = A003961(a(n-1)) * a(n-2).at n=6A206296
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=31A286781
• Column 3 of A286781.at n=4A286788
• Sum of two (possibly negative) cubes in at least 3 ways (primitive solutions).at n=27A293650
• Numbers that are the sum of two positive cubes in exactly two ways.at n=36A343708
• Taxicab numbers that are sandwiched between nonsquarefree numbers.at n=5A372296
• Taxicab numbers that are deficient.at n=18A379849