Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.
A251337
Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.
Terms
- a(0) =455a(1) =3315a(2) =24714a(3) =189129a(4) =1487375a(5) =12022920a(6) =99776859a(7) =848228679a(8) =7364934770a(9) =65097686685a(10) =583829921739
External references
- oeis: A251337