Number of binary strings of length n with no substrings equal to 0010 0101 or 1011.

Terms

a(0) =13a(1) =22a(2) =37a(3) =62a(4) =105a(5) =178a(6) =301a(7) =508a(8) =857a(9) =1446a(10) =2441a(11) =4122a(12) =6961a(13) =11754a(14) =19845a(15) =33504a(16) =56565a(17) =95502a(18) =161245a(19) =272246a(20) =459657a(21) =776074a(22) =1310301a(23) =2212276a(24) =3735153a(25) =6306350a(26) =10647505a(27) =17977010a(28) =30351969a(29) =51245554