Number of n X 4 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.

A196134

Number of n X 4 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) =2a(1) =8a(2) =19a(3) =31a(4) =165a(5) =251a(6) =931a(7) =1880a(8) =5556a(9) =15236a(10) =36242a(11) =100659a(12) =238001a(13) =672366a(14) =1720580a(15) =4457811a(16) =11495347a(17) =29435188a(18) =78700799a(19) =203112497a(20) =528285928a(21) =1357620133a(22) =3537680945a(23) =9273276601a(24) =24073315272a(25) =62428922801a(26) =161432508844

External references