2337014158domain: NAppears in sequencesT(n,k)=Number of 0..3 arrays of length n+2*k-1 with sum no more than 3*k in any length 2k subsequence (=50% duty cycle).at n=28A212471Number of 0..3 arrays of length 2*n with sum no more than 3*n in any length 2n subsequence (=50% duty cycle).at n=7A212472