Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,3,4 for x=0,1,2,3,4.

A195977

Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,3,4 for x=0,1,2,3,4.

Terms

    a(0) =25a(1) =139a(2) =240a(3) =455a(4) =1072a(5) =2718a(6) =5637a(7) =12823a(8) =30486a(9) =72042a(10) =166884a(11) =390514a(12) =917562a(13) =2167323a(14) =5114140a(15) =12071815a(16) =28523614a(17) =67538866a(18) =159964100a(19) =378996636a(20) =898240293a(21) =2130429190a(22) =5054033816a(23) =11993264778a(24) =28464315995a(25) =67574829560

External references