4817152

Appears in sequences

• a(0) = a(1) = 1; a(n+2) = 2*a(n+1) + 2*a(n).at n=16A026150
• a(n)*a(n+3) - a(n+1)*a(n+2) = 2^n, given a(0) = 1, a(1) = 1, and a(2) = 1.at n=18A080876
• a(n) = Sum_{r=0..2^(n-1)} Binomial(2^n,2r)*3^r.at n=4A084594
• a(n) = 8*a(n-1) - 4*a(n-2), where a(0) = 1, a(1) = 4.at n=8A090965
• Expansion of g.f.: x^2*(1 + x - x^2)/(1 - 2*x^2 - 2*x^4).at n=33A160444
• Elements of A160444, pairs of consecutive entries swapped.at n=32A160572