408832
domain: N
Appears in sequences
- a(n)*a(n+3) - a(n+1)*a(n+2) = 2^n, given a(0)=1, a(1)=1, a(2)=3.at n=17A080878
- Trinomial transform of the Fibonacci numbers (A000045).at n=8A082761
- Row sums of triangle A099602, in which row n equals the inverse binomial transform of column n of the triangle of trinomial coefficients (A027907).at n=16A099603
- Number of n-length words on {0,1,2,3,4} in which 0 appears only in runs of length 2.at n=9A255117
- Number of length-n phone numbers that can be dialed by a chess knight on a 0-9 keypad that starts on any number and takes n-1 steps.at n=13A327692