Number of (n+3) X (2+3) 0..3 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 4, and upper left element zero.
A230943
Number of (n+3) X (2+3) 0..3 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 4, and upper left element zero.
Terms
- a(0) =16a(1) =34a(2) =724a(3) =1994a(4) =28128a(5) =76682a(6) =1144652a(7) =3107746a(8) =46058744a(9) =125263570a(10) =1857863476a(11) =5050618938a(12) =74908095984a(13) =203655079130
External references
- oeis: A230943