Number of n X n 0..2 arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.
A268802
Number of n X n 0..2 arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.
Terms
- a(0) =3a(1) =34a(2) =332a(3) =5848a(4) =195384a(5) =12432856a(6) =1508087180a(7) =348686105792
External references
- oeis: A268802