Number of (n+3)X(2+3) 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230702
Number of (n+3)X(2+3) 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
Terms
- a(0) =8a(1) =28a(2) =244a(3) =800a(4) =6576a(5) =21076a(6) =173428a(7) =554040a(8) =4558536a(9) =14555468a(10) =119758148a(11) =382358832a(12) =3145930352a(13) =10044068932a(14) =82639468964a(15) =263844008200
External references
- oeis: A230702