33110

Appears in sequences

• n written efficiently in natural numbers base, i.e., in form ...wxyz where n =1*z + 2*y + 3*x + 4*w + ... with z < 1, y < 2, x < 3, w < 4, ...at n=30A055992
• a(n) = 169*n^2 - n.at n=13A157998
• a(n) = 676*n^2 - 2*n.at n=6A158392
• a(n) = 196*n^2 - 14.at n=12A158553
• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set {t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four, six or seven distinct values for every i,j,k<=n.at n=6A211738
• Number of cusps in a class of degree-3n complex algebraic surfaces.at n=17A225018
• a(n) = denominator(n!*[z^n](z*(exp(z)+2*exp(-(1/2)*z)*cos((1/2)*z* 3^(1/2)))/(1-exp(-z)))).at n=42A306149
• Triangle T(n,k) read by rows: number of labeled 2-regular digraphs (multiple arcs and loops allowed) on n nodes with k components.at n=41A307804
• a(n) = Sum_{k=0..floor(n/3)} n^k * binomial(2*n-2*k,n-3*k).at n=8A371827