Number of nX6 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.
A222836
Number of nX6 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) =55a(1) =1536a(2) =1944a(3) =4056a(4) =9600a(5) =24576a(6) =55296a(7) =124416a(8) =279936a(9) =645504a(10) =1476096a(11) =3393024a(12) =7742976a(13) =17750400a(14) =40560000a(15) =92952576a(16) =212557824a(17) =486864384a(18) =1113680256a(19) =2550116736a(20) =5834651136a(21) =13357979136a(22) =30567200256a(23) =69973632384a(24) =160134620544
External references
- oeis: A222836