282752

Appears in sequences

• Structured rhombic triacontahedral numbers (vertex structure 7).at n=31A100165
• a(n) = ((5 + sqrt(18))*(2 + sqrt(8))^n + (5 - sqrt(18))*(2 - sqrt(8))^n)/2.at n=7A164593
• Numbers with prime signature {7,2}, i.e., of form p^7*q^2 with p and q distinct primes.at n=17A179689
• Numbers k such that sigma(k) + tau(k) + phi(k) is a prime, where sigma(k) = A000203(k), tau(k) = A000005(k) and phi(k) = A000010(k).at n=29A229265
• Number of nX2 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.at n=11A267661
• Number of ways to construct a triangle with longest side n using unit-length straws of two colors for the sides.at n=5A278036