1/8 the number of (n+1)X4 0..3 arrays with all 2X2 subblock sums the same.
A184023
1/8 the number of (n+1)X4 0..3 arrays with all 2X2 subblock sums the same.
Terms
- a(0) =242a(1) =491a(2) =1052a(3) =2597a(4) =6650a(5) =18701a(6) =53948a(7) =165929a(8) =520322a(9) =1709981a(10) =5706212a(11) =19735097a(12) =69075290a(13) =248513021a(14) =902117708a(15) =3343884089a(16) =12473559602a(17) =47261525021a(18) =179833241972a(19) =692191519097
External references
- oeis: A184023