Number of binary strings of length n with no substrings equal to 0010 0100 or 1001
13, 23, 40, 70, 122, 213, 371, 647, 1128, 1967, 3430, 5981, 10429, 18185, 31709
2 seqfan posts
Fri Jun 4 22:20:18 CEST 2010 [seqfan] Re: recurrences for pattern avoiding binary strings A164387 to A164494