Number of 0..3 arrays of length 2*n+2 with sum less than 3*n in any length 2n subsequence (=less than 50% duty cycle).
A213467
Number of 0..3 arrays of length 2*n+2 with sum less than 3*n in any length 2n subsequence (=less than 50% duty cycle).
Terms
- a(0) =31a(1) =927a(2) =18018a(3) =319078a(4) =5444644a(5) =91147915a(6) =1508740928a(7) =24791568796a(8) =405322707108
External references
- oeis: A213467