-554

Appears in sequences

• Coefficients of the '6th-order' mock theta function psi(q).at n=56A053269
• Low-temperature partition function expansion for hexagonal lattice (Potts model, q=3).at n=21A057385
• a(n+1) = a(n) - a(floor(n/2)), with a(0)=0, a(1)=1.at n=61A062187
• G.f. A(x) defined by: A(x)^4 consists entirely of integer coefficients between 1 and 4 (A083954); A(x) is the unique power series solution with A(0)=1.at n=8A084204
• Expansion of q * chi(-q) / chi(-q^5)^5 in powers of q where chi() is a Ramanujan theta function.at n=36A095813
• Row sums of triangle A104984.at n=6A104985
• Triangular array from Steinbach matrices plus their squares as characteristic polynomials: M[i,j]=A[i,j]+A[i,j]^2: A[i,j]^2=Min[i,j]; CharacteristicPolynomial[M[i,j]];.at n=41A122073
• Expansion of f(-q)^2*P(q) in powers of q.at n=23A122163
• New tetradiagonal form matrix as triangular sequence from solution of : X(n,m)=Steinbach(n,m)^(-1).tri-Antidiagonal_1(n,n).at n=50A124020
• Expansion of f(q, q^3)^2 / (f(q, q^4) * f(q^2, q^3)) in powers of q where f(, ) is the Ramanujan general theta function.at n=37A138522
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 1/sqrt(1 + 2*(k-1)*x + ((k+1)*x)^2).at n=49A307884
• G.f. satisfies: A(x) = (1 - x) * Product_{k>0} A(x^(2*k)) / Product_{k>1} A(x^(2*k-1)).at n=43A321326