Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4.
A196701
Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =11a(2) =38a(3) =136a(4) =488a(5) =1744a(6) =6208a(7) =22202a(8) =79292a(9) =282984a(10) =1010760a(11) =3609442a(12) =12887556a(13) =46021868a(14) =164340008a(15) =586827146a(16) =2095503116a(17) =7482801488a(18) =26720080488a(19) =95414259450a(20) =340712829860
External references
- oeis: A196701