Number of binary arrays of length 2*n+3 with fewer than n ones in any length 2n subsequence (=less than 50% duty cycle).

A213121

Number of binary arrays of length 2*n+3 with fewer than n ones in any length 2n subsequence (=less than 50% duty cycle).

Terms

    a(0) =1a(1) =14a(2) =86a(3) =424a(4) =1926a(5) =8404a(6) =35836a(7) =150604a(8) =626726a(9) =2589844a(10) =10646676a(11) =43594464a(12) =177950236a(13) =724578824a(14) =2944375096a(15) =11944652884a(16) =48388816486a(17) =195794585044a(18) =791434666276

External references