1630019160

Appears in sequences

• Expansion of (1+2*x+x^2)/(1-34*x+x^2).at n=6A004294
• Numbers k such that 2*k^2 + 9 is a square.at n=12A075848
• Expansion of (1 +4*x -x^2)/((1-x^2)*(1-2*x-x^2)); a Pellian-related sequence.at n=23A114689
• a(n) = Pell(n)*A132973(n) for n>=1, with a(0)=1, where A132973 lists the coefficients in psi(-q)^3/psi(-q^3) and where psi() is a Ramanujan theta function.at n=24A209450