35560

Appears in sequences

• McKay-Thompson series of class 34A for Monster.at n=47A058638
• Expansion of (1-9*x^2-27*x^3)/((1+3*x+9*x^2)*(1-4*x-9*x^2-9*x^3+81*x^4)).at n=7A129452
• Number of (n+1) X (2+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=7A235011
• T(n,k) is the number of (n+1) X (k+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=37A235017
• Numerator of the mean of all parts of all partitions of n.at n=39A236360
• Expansion of Sum_{i>=1} mu(i)^2*x^i/(1 - x^i) * Product_{j=1..i} 1/(1 - mu(j)^2*x^j), where mu() is the Moebius function (A008683).at n=47A284835
• Triangular array read by rows: T(n,k) is the number of partial functions on [n] with exactly k connected components, n>=0, 0<=k<=n.at n=33A349950
• a(n) = Sum_{k=1..n} floor(n/(2*k-1))^k.at n=49A350147