82752

Appears in sequences

• Expansion of (1-x)/(1+2*x+2*x^2-2*x^3).at n=19A078067
• Numbers n such that 4*10^n + 7*R_n - 6 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=7A102995
• Number of n X 2 binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.at n=10A268744
• Numbers k such that phi(6k) is either phi(6k-2) or phi(6k+2), where phi is Euler's totient function A000010.at n=25A279011
• Numbers k such that phi(6k) = phi(6k-2), where phi is Euler's totient function A000010.at n=15A279183
• The number of grains of sand in the identity element for the 3D sandpile group on an n X n X n cubic grid.at n=27A351379