65760

Appears in sequences

• Related to the minimal number of periodic orbits of periods guaranteed by Sharkovskii's theorem.at n=42A130628
• a(n) = Sum_{d|n} phi(n/d)*2^(d+1), with a(0) = 0.at n=15A160619
• Number of nX4 binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally.at n=4A189259
• T(n,k)=Number of nXk binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally.at n=32A189264
• Number of 5Xn binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally.at n=3A189267
• (n-1)-st elementary symmetric function of {1,1,2,2,3,3,4,4,5,5,...,Floor[(n+1)/2]}.at n=9A203151
• (n-1)-st elementary symmetric function of the first n terms of (1,2,3,4,5,1,2,3,4,5,...)=A010884.at n=9A203166
• Triangle read by rows, T(n,k) = Sum_{j=0..k-1} S(n,j+1)*S(n,k-j) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n-1.at n=33A254882
• a(n) = 2^(n+1) + n^2 - 1.at n=15A290707
• Coefficients of q-expansion of Eisenstein series G_{9/2}(tau) multiplied by 240.at n=20A306936
• Irregular triangle read by rows. Coefficients of the polynomials (-1)^n*binomial(-x - 1, -x - n - 1) * binomial(n + x, x) * (n!)^2 in ascending order of powers.at n=26A358501
• Triangle read by rows. The coefficients of the polynomials hypergeom([-x, -x, -n], [-x - n, -x - n], 1) * Product_{j=1..n} (j + x)^2 in ascending order of powers.at n=16A358502
• Number of 4 X 4 prime magic squares with magic sum 2n.at n=39A368676