15557484098
domain: N
Appears in sequences
- Expansion of 2*x*(1 - x)/(1 - 3*x + x^2).at n=25A052995
- Row sums of array T in A055818; twice the odd-indexed Fibonacci numbers after initial term.at n=25A055819
- Number of base 4 n-digit numbers with adjacent digits differing by one or less.at n=24A126358
- Denominators of A178381(4*n+3)/A178381(4*n+2).at n=24A179133
- a(n) = Fibonacci(n)*A033719(n) for n>=1, with a(0)=1, where A033719 lists the coefficients in theta_3(q)*theta_3(q^7).at n=49A205974
- a(n) = Fibonacci(n)*A002652(n) for n>=1, with a(0)=1, where A002652 lists the coefficients in theta series of Kleinian lattice Z[(-1+sqrt(-7))/2].at n=49A205975
- a(n) = least m such that 1/2^(n+1) < f(m) < 1/2^n, where f(m) = fractional part of m*(golden ratio).at n=33A283747