418176

Appears in sequences

• a(n) = 4*n*Catalan(n)^2.at n=6A267982
• Coefficients in expansion of Eisenstein series -q*(d/dq)(q*(d/dq)E_2).at n=22A282154
• Expansion of 1/theta_4(q)^8 in powers of q = exp(Pi i t).at n=7A319553