1/8 the number of (n+1)X6 0..3 arrays with all 2X2 subblock sums the same.
A184025
1/8 the number of (n+1)X6 0..3 arrays with all 2X2 subblock sums the same.
Terms
- a(0) =2312a(1) =3781a(2) =6650a(3) =13603a(4) =29432a(5) =70867a(6) =177386a(7) =477919a(8) =1325792a(9) =3881491a(10) =11637650a(11) =36399823a(12) =116243192a(13) =384453427a(14) =1295419706a(15) =4494981199a(16) =15848957072a(17) =57232544851a(18) =209314623650a(19) =779774009743
External references
- oeis: A184025