Half the number of n X 2 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors.
A183495
Half the number of n X 2 0..2 arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors.
Terms
- a(0) =3a(1) =9a(2) =36a(3) =128a(4) =540a(5) =2048a(6) =8256a(7) =32784a(8) =131328a(9) =524288a(10) =2098368a(11) =8388608a(12) =33558528a(13) =134217984a(14) =536887296a(15) =2147483648a(16) =8590003200a(17) =34359738368a(18) =137439215616a(19) =549755817984
External references
- oeis: A183495