Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,3,4 for x=0,1,2,3,4.

A196132

Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,3,4 for x=0,1,2,3,4.

Terms

    a(0) =0a(1) =4a(2) =3a(3) =8a(4) =14a(5) =19a(6) =46a(7) =56a(8) =133a(9) =184a(10) =372a(11) =599a(12) =1064a(13) =1874a(14) =3147a(15) =5692a(16) =9516a(17) =17053a(18) =28980a(19) =51004a(20) =88089a(21) =153086a(22) =266660a(23) =461205a(24) =804810a(25) =1392380a(26) =2426083a(27) =4205680a(28) =7313450a(29) =12699273

External references