Number of (n+1) X (n+1) 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.
A206259
Number of (n+1) X (n+1) 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.
Terms
- a(0) =16a(1) =28a(2) =78a(3) =260a(4) =932a(5) =3440a(6) =12878a(7) =48628a(8) =184764a(9) =705440a(10) =2704164a(11) =10400608a(12) =40116608a(13) =155117528a(14) =601080398a(15) =2333606228a(16) =9075135308a(17) =35345263808a(18) =137846528828a(19) =538257874448
External references
- oeis: A206259