Number of nX7 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.
A222837
Number of nX7 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) =163a(1) =6144a(2) =5832a(3) =10584a(4) =22848a(5) =55296a(6) =138240a(7) =301056a(8) =642048a(9) =1382400a(10) =3022848a(11) =6690816a(12) =14816256a(13) =32741376a(14) =72244224a(15) =159258624a(16) =351111168a(17) =774297600a(18) =1707764736a(19) =3766818816a(20) =8308300800a(21) =18324658176a(22) =40416165888a(23) =89140107264
External references
- oeis: A222837