-931

Appears in sequences

• Expansion of Product_{m>=1} (1-m*q^m)^19.at n=4A022679
• (1/18)*Difference between concatenation of n and n^2 and concatenation of n^2 and n.at n=18A055435
• Expansion of (1-x)/(1-x-x^2+2*x^3).at n=29A078011
• Expansion of -(2*x+1)*(6*x^2+4*x+1)/((3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1)).at n=6A110688
• Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118407) are equal; also equals the matrix inverse of triangle A118400.at n=127A118404
• A triangle of matrix polynomials: m(n)=antisymmeticmatix(n).pseudotranspose[antisymmeticmatix(n)].at n=31A158336
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 137", based on the 5-celled von Neumann neighborhood.at n=19A270277
• G.f.: Sum_{n>=1} (-1)^(n-1) * x^(n^2)/(1 - x^n)^n.at n=71A303506
• Dirichlet g.f.: zeta(s-1) / (zeta(s) * zeta(s-2)).at n=30A328502
• a(n) = numerator of the Y-coordinate of n*P where P is the generator [0,0] for rational points on the curve y^2 + y = x^3 + x^2.at n=8A350624
• a(n) = Sum_{k=0..n} A011971(n, k) * (-2)^(n - k).at n=5A367809
• Expansion of B(x)^2, where B(x) is the g.f. of A108482.at n=46A373419