Number of 2Xn 0..2+n-2 arrays with upper left zero and lower right 2+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.
A265467
Number of 2Xn 0..2+n-2 arrays with upper left zero and lower right 2+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.
Terms
- a(0) =1a(1) =3a(2) =26a(3) =139a(4) =765a(5) =6221a(6) =46898a(7) =292690a(8) =1722770a(9) =10915890a(10) =73213113a(11) =480069015a(12) =3032127834a(13) =19084607287a(14) =122424984026a(15) =792495253960
External references
- oeis: A265467