Number of binary arrays of length 2*n+4 with fewer than n ones in any length 2n subsequence (=less than 50% duty cycle).

A213122

Number of binary arrays of length 2*n+4 with fewer than n ones in any length 2n subsequence (=less than 50% duty cycle).

Terms

    a(0) =1a(1) =19a(2) =136a(3) =714a(4) =3354a(5) =14946a(6) =64664a(7) =274676a(8) =1152494a(9) =4793874a(10) =19813536a(11) =81495084a(12) =333932596a(13) =1364199604a(14) =5559496912a(15) =22610923448a(16) =91805888342a(17) =372224952818

External references