-614

Appears in sequences

• Coefficients of the 3rd-order mock theta function f(q).at n=50A000025
• Coefficient of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=25A000039
• Expansion of (1-x)/(1-x+2*x^3).at n=20A078014
• a(n) = 4*a(n-1) - 5*a(n-2).at n=7A102486
• Expansion of q * (psi(q^5) / psi(q))^2 in powers of q where psi() is a Ramanujan theta function.at n=15A138519
• Triangle, read by rows, such that row n equals the coefficients of x^(n^2+n-1+k) in F(x,n) for k = 1..n, where F(x,n) = (1 + x*F(x,n))*(1 + x^n/F(x,n)), for n>=1.at n=42A200171
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of M (as in A204026), given by min(F(i+1),F(j+1)), where F=A000045 (Fibonacci numbers).at n=32A204027
• G.f. A(x,y) satisfies: Sum_{n=-oo...+oo} (x^n + y)^n = exp( (1-y) * A(x,y) ) / (1-y), where A(x,y) = Sum_{n>=1} x^n/n * Sum{k=0..n-1} T(n,k)*y^k, written here as a flattened triangle of coefficients T(n,k) read by rows.at n=22A321600