-783

Appears in sequences

• (1/18)*Difference between concatenation of n and n^2 and concatenation of n^2 and n.at n=17A055435
• G.f. A(x) satisfies: 3^n + 1 = Sum_{k=0..n} [x^k]A(x)^n and also satisfies: (3+z)^n + (1+z)^n - z^n = Sum_{k=0..n} [x^k](A(x) + z*x)^n for all z, where [x^k]A(x)^n denotes the coefficient of x^k in A(x)^n.at n=6A100239
• Matrix inverse of triangle A111544.at n=15A111548
• Matrix inverse of triangle A111544.at n=22A111548
• Matrix inverse of triangle A111544.at n=30A111548
• Matrix inverse of triangle A111544.at n=39A111548
• Matrix inverse of triangle A111544.at n=49A111548
• a(n) = (-1)^n*n*(n-2).at n=28A131386
• Expansion of g.f. (2*x^3 + 5) / ( -x^5 + x^3 + 1).at n=40A136598
• Expansion of (1-5*x-x^2+x^3)/((1+x)*(1-x)^3).at n=27A141354
• Polynomial expansion sequence : p(x)=1 + x - x^5 + x^9 + x^10.at n=55A143605
• Years in which a transit of Venus (as seen from Earth) took place or is expected to occur, according to the catalog by Fred Espenak.at n=20A171467
• Expansion of x^5/((1-x)*(1+x-x^5)).at n=52A174532
• a(n) = 1 - n^2.at n=28A258837
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood.at n=15A271288
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 433", based on the 5-celled von Neumann neighborhood.at n=19A272148
• G.f.: 1/(1 + x/(1 + 2*x^2/(1 + 3*x^3/(1 + 4*x^4/(1 + 5*x^5/(1 + 6*x^6/(1 + ... ))))))), a continued fraction.at n=24A285409
• Expansion of Sum_{k>=0} x^(k*(k+1)/2) / Product_{j=1..k} (1 + x^j)^j.at n=48A306706
• Sequence obtained by taking the general formula for generalized k-gonal numbers: m*((k - 2)*m - k + 4)/2, where m = 0, +1, -1, +2, -2, +3, -3, ... and k >= 5. Here k = 0.at n=54A317300
• Dirichlet inverse of A064664, the inverse permutation of EKG-sequence.at n=62A323411