2050048

Appears in sequences

• Negated coefficients of Chebyshev T polynomials: a(n) = -A053120(n+10, n), n >= 0.at n=10A006975
• a(n) = (2/3) * 4^n * binomial(3*n, n).at n=4A036909
• 10-fold convolution of A000302 (powers of 4).at n=5A054340
• a(n) = 2^(n-3)*binomial(n,4).at n=14A213432
• G.f. A(x) satisfies A(x) = 1 + 4*x*A(x)^(5/2).at n=6A214553
• Number of 1's in truth table for Boolean function x1 x2 x4 + x2 x3 x5 + ... + x{n-3} x{n-2} xn + x{n-2} x{n-1} x1 + x{n-1} xn x2 + xn x1 x3.at n=18A305381