536838145

Appears in sequences

• a(n) = 2^(2n+1) - 2^(n+1) + 1.at n=14A092440
• a(n) = ceiling((2^n + 1 - 2*floor(2^(n/2)))/2).at n=29A129757
• Expansion of (1 + 4*x - 6*x^2 - 16*x^3 + 20*x^4)/((1-x)*(1-2*x)*(1+2*x)*(1-2*x^2)).at n=28A171663
• Gaussian norm of 1+(1+i)^n.at n=29A238187
• a(2n) = A060867(n+1), a(2n+1) = A092440(n+1).at n=27A276918