90704domain: NAppears in sequencesNumber of binary strings of length n with no substrings equal to 0001 0101 or 0111.at n=25A164470a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-5)*a(5) for n >= 6, with a(1)=0 and a(2)=a(3)=a(4)=a(5)=1.at n=29A361313