82790070
domain: N
Appears in sequences
- a(n) = floor(Fibonacci(n)/2).at n=41A004695
- First member of the Diophantine pair (m,k) that satisfies 5*(m^2 + m) = k^2 + k; a(n) = m.at n=13A077259
- A Fibonacci convolution.at n=40A094686
- a(n) = F(3) + F(6) + F(9) + ... + F(3n), F(n) = Fibonacci numbers A000045.at n=13A099919
- Define a(1)=0, a(2)=2 then a(n) = 3*a(n-1) - a(n-2), a(n+1) = 3*a(n)-a(n-1) and a(n+2) = 3*a(n+1) - a(n) + 2.at n=19A105073
- Antidiagonal sums of number triangle A086645.at n=20A108479
- Expansion of (1-x)^3/(1-4x+5x^2-4x^3+x^4).at n=20A109961
- a(n+3) = 3*a(n+2) + 5*a(n+1) + a(n), a(0) = 1, a(1) = 2, a(2) = 11.at n=13A110679
- Partial sums of odd Fibonacci numbers (A014437).at n=25A174542
- a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.at n=40A201864
- x-values in the solutions to x^2 + x = 5*y^2 + y.at n=7A257939
- Expansion of 1/( (1 + x) * (1 - x^2*(1 + x)^2) ).at n=41A375372