Number of (n+2)X(1+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.
A251675
Number of (n+2)X(1+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4.
Terms
- a(0) =293a(1) =489a(2) =953a(3) =2257a(4) =5151a(5) =12063a(6) =29839a(7) =72345a(8) =176143a(9) =435429a(10) =1069885a(11) =2629463a(12) =6489171a(13) =15986259a(14) =39377317a(15) =97110263a(16) =239369633a(17) =589963893a(18) =1454573751a(19) =3585822223a(20) =8839317615a(21) =21791873761a(22) =53722460943a(23) =132436498045a(24) =326492433109
External references
- oeis: A251675