Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.
A253697
Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.
Terms
- a(0) =4456a(1) =1984a(2) =1608a(3) =1790a(4) =2626a(5) =4010a(6) =6558a(7) =10428a(8) =16796a(9) =26124a(10) =42686a(11) =69008a(12) =112928a(13) =182646a(14) =298374a(15) =486940a(16) =796612a(17) =1296330a(18) =2121532a(19) =3469558a(20) =5681088a(21) =9275818a(22) =15194178a(23) =24867946a(24) =40742556a(25) =66629916a(26) =109153524a(27) =178773544a(28) =292896144
External references
- oeis: A253697