Number of 0..3 arrays of length 2*n with sum less than 3*n in any length 2n subsequence (=less than 50% duty cycle).
A213465
Number of 0..3 arrays of length 2*n with sum less than 3*n in any length 2n subsequence (=less than 50% duty cycle).
Terms
- a(0) =6a(1) =106a(2) =1758a(3) =28722a(4) =466136a(5) =7536790a(6) =121573668a(7) =1957953138a(8) =31497261096a(9) =506264941416
External references
- oeis: A213465