6293097000domain: NAppears in sequencesa(n)=Sum{T(2i,n-2i): i=0,1,...,[ n/2 ]}, array T as in A049600.at n=25A049601Number of (s(0), s(1), ..., s(n)) such that 0 < s(i) < 5 and |s(i) - s(i-1)| <= 1 for i = 1,2,...,n, s(0) = 2, s(n) = 4.at n=25A094292