27735

Appears in sequences

• Structured rhombic triacontahedral numbers (vertex structure 7).at n=14A100165
• Equatorial structured meta-anti-diamond numbers, the n-th number from an equatorial structured n-gonal anti-diamond number sequence.at n=14A100189
• Numbers n such that 9*10^n + 3*R_n + 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=27A103096
• Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|>=|y-z|.at n=15A212682
• a(n) is the least value of k such that the decimal expansion of n^k contains nine consecutive identical digits.at n=24A217164
• Coefficient array for powers of x^2 of polynomials appearing in a generalized Melham conjecture on alternating sums of fifth powers of Chebyshev S polynomials with odd indices.at n=37A220671
• Positive integers m with 2^m*p(m) + 1 prime, where p(.) is the partition function (A000041).at n=28A236390
• Numbers divisible by prime(d) for each digit d in their base-6 representation, none of which may be zero.at n=43A256876
• If F is the Fermat point of a triangle ABC with A < B < C < 2*Pi/3, where AB, BC, CA, FA, FB and FC are all positive integers, then, this sequence gives the sum FA + FB + FC when gcd(a, b, c) = A351477(n).at n=10A351476
• Numbers k such that sigma(k) = psi(k) + 2 * tau(k).at n=38A387962