3714566310

Appears in sequences

• Number of degree-n irreducible polynomials over GF(2); number of n-bead necklaces with beads of 2 colors when turning over is not allowed and with primitive period n; number of binary Lyndon words of length n.at n=37A001037
• a(n) = (1/n) * Sum_{ d divides n } mu(n/d) * (2^d - 1).at n=36A059966
• Number of orbits of length n in map whose periodic points are A000051.at n=36A060477
• Number of orbits of length n in map whose periodic points come from A059990.at n=36A060480
• Number of subsets of {1,2,..n} that sum to 1 mod n.at n=36A064355
• a(n) = (2^prime(n)-2)/prime(n); a(0) = 0 by convention.at n=12A064535
• a(n) = round( 2^n/n ).at n=36A065482
• Number of n-bead necklaces using exactly three colors with no adjacent beads having the same color.at n=36A093367
• (1/n)*A204991(n).at n=36A204992
• Express 1 - x - x^2 - x^3 - x^4 - ... as product (1 + g(1)*x) * (1 + g(2)*x^2) *(1 + g(3)*x^3) * ... and use a(n) = - g(n).at n=36A220418
• Numerator of (2^n - 2)/n.at n=36A225101
• Number of solutions to +-1 +- 2 +- 3 +- ... +- n == n-1 (mod n).at n=36A300329
• Inverse Weigh transform of 2^n.at n=36A306156
• Inverse Weigh transform of 2^(n-1).at n=36A383034