130788

Appears in sequences

• Number of 2n-bead balanced binary necklaces of fundamental period 2n, equivalent to reversed complement; also Dirichlet convolution of b_n=2^(n-1) with mu(n); also number of components of Mandelbrot set corresponding to Julia sets with an attractive n-cycle.at n=17A000740
• Number of primitive (aperiodic) word structures of length n which contain exactly two different symbols.at n=17A056278
• Number of primitive (aperiodic) palindromic structures of length n using a maximum of two different symbols.at n=36A056476
• Number of primitive (aperiodic) palindromic structures using exactly two different symbols.at n=36A056481
• A hierarchical sequence (S(W2{3}c) - see A059126).at n=11A059135
• Number of nX4 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.at n=24A303678