-158

Appears in sequences

• Partition function coefficients for square lattice spin 5/2 Ising model.at n=62A010109
• 9th differences of primes.at n=45A036270
• a(n) = 2*n*mu(n).at n=78A062004
• Expansion of x/B(x) where B(x) is the g.f. for A002487.at n=52A073469
• A measure of how close r^n is to an integer where r is the real root of x^3-x-1, i.e.. r = (1/2 + sqrt(23/108))^(1/3) + (1/2 - sqrt(23/108))^(1/3) = 1.3247.... (Higher absolute value of a(n) means closer, negative means less than closest integer.)at n=32A084252
• McKay-Thompson series of class 24G for the Monster group.at n=40A112161
• Expansion of x(1-3x+x^2+x^3)/(1+x)^2.at n=40A113142
• a(n,m) =Floor[N[(-2 + Sqrt[3])^n + (-2 - Sqrt[3])^n]/2^m].at n=26A117809
• Denominators of the convergents of the 2-adic continued fraction of zero given by A118830.at n=65A118832
• Y = X = 'i + .25(ii + jj + kk + e); Z = 'i - i' + .5(jj + kk - jk + kj) + e. See pdf-file and comment for an exact definition (this sequence gives an initial term 3); Version "les".at n=39A119954
• Tripartite straight linked graphs as matrices producing polynomials and their triangular sequence: Matrix model (A120658 ): M(n,m,9)={{0, 1, 1, 1, 0, 0, 1, 0, 0}, {1, 0, 1, 0, 1, 0, 0, 1, 0}, {1, 1, 0, 0, 0, 1, 0, 0, 1}, {1, 0, 0, 0, 1, 1, 1, 0, 0}, {0, 1, 0, 1, 0, 1, 0, 1, 0}, {0, 0, 1, 1, 1, 0, 0, 0, 1}, {1, 0, 0, 1, 0, 0, 0, 1, 1}, {0, 1, 0, 0, 1, 0, 1, 0, 1}, {0, 0, 1, 0, 0, 1, 1, 1, 0}} This model is straight hyperconnections between 3 generalized K(n) complete graphs.at n=73A123590
• Expansion of phi(x) * psi(x^4) * phi(-x^4)^4 in powers of x where phi(), psi() are Ramanujan theta functions.at n=41A128711
• Expansion of chi(-q) * chi(-q^15) / (chi(-q^6) * chi(-q^10)) in powers of q where chi() is a Ramanujan theta function.at n=37A132968
• G.f. satisfies: 2*A(x) = 3*x + x^2 - Series_Reversion( A(x) ).at n=4A139085
• First differences of A140778.at n=55A140779
• Result of using the perfect squares as coefficients in an infinite polynomial series in x and then expressing this series as (1+a(1)x)(1+a(2)x^2)(1+a(3)x^3)...at n=10A147559
• a(n) = -2*n^2 + 12*n - 14.at n=11A147973
• Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1+x-x^2)^(n+1)*Sum_{j >= 0} (j+1)^n*(-x + x^2)^j.at n=20A156890
• A triangle sequence from matrix polynomials of a three symbol type {0, 1, -1}: c(i,k)= Floor[Mod[i/2^k, 2]]; M(d)=Table[If[Sum[c(n, k)*c(m, k), {k, 0, d - 1}] == 0, 1, If[Sum[c(n, k)*c(m, k), {k, 0, d - 1}] == 1, -1, 0]], {n, 0, d - 1}, {m, 0, d - 1}].at n=31A158417
• Numerator of Hermite(n, 1/9).at n=2A159030