Number of n X 5 0..3 arrays with no element equal to another at a city block distance of exactly two, and new values 0..3 introduced in row major order.

A222835

Number of n X 5 0..3 arrays with no element equal to another at a city block distance of exactly two, and new values 0..3 introduced in row major order.

Terms

    a(0) =19a(1) =384a(2) =648a(3) =1536a(4) =4032a(5) =9600a(6) =22848a(7) =55296a(8) =133824a(9) =322944a(10) =779328a(11) =1881600a(12) =4542912a(13) =10967424a(14) =26477376a(15) =63922176a(16) =154322112a(17) =372566400a(18) =899454528a(19) =2171475456a(20) =5242405824a(21) =12656287104a(22) =30554979648a(23) =73766246400a(24) =178087472832

External references