6713344

Appears in sequences

• Expansion of e.g.f.: exp(cosh(2*x)-1), even powers only.at n=5A081559
• a(n) = 2a(n-2) + 4a(n-3), n >= 3.at n=27A134812
• Expansion of 1/(1-2*x^2-4*x^3). (2,4)-Padovan sequence.at n=24A176739