44164

Appears in sequences

• Numbers k such that 27*2^k+1 is prime.at n=31A032363
• Expansion of (1+3*x^2+7*x^3+15*x^4+13*x^5+15*x^6+8*x^7+4*x^8)/((1-x)*(1-x^2)^3*(1-x^3)^2).at n=21A037241
• a(0)=0, a(1)=1, a(2)=2, a(3)=3, a(4)=12; for n > 4, a(n) = 8*a(n-2) - a(n-4) - 3.at n=12A105045
• Number of nonnegative solutions to x^3 + y^3 + z^3 <= n^3.at n=39A224215
• A(n,k) is the sum over all Dyck paths of semilength n of products over all peaks p of (x_p+k*y_p)/y_p, where x_p and y_p are the coordinates of peak p; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=41A258219
• Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+3) rectangle.at n=13A274597
• Numbers n such that phi(n) = phi(n+11), with Euler's totient function phi = A000010.at n=31A276504
• a(n) is the largest integer x such that x/sopf(x) = prime(n) where sopf(x) is the sum of distinct prime factors of x and prime(n) is the n-th prime.at n=41A336493