478361013021
domain: N
Appears in sequences
- a(n) = floor((Fibonacci(2*n+1)+1)/2).at n=29A087953
- Row sums of triangle A099510, so that a(n) = Sum_{k=0..n} coefficient of z^k in (1 + 2*z + z^2)^(n-[k/2]), where [k/2] is the integer floor of k/2.at n=28A099511
- a(n) = (Fibonacci(3*n-1) + 1)/2 for n >= 1.at n=19A292278
- Numbers k such that the k-th centered 40-gonal numbers (A195317) is a square.at n=19A351354