Number of n X 4 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A268770
Number of n X 4 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =36a(1) =100a(2) =446a(3) =2296a(4) =10340a(5) =46312a(6) =198114a(7) =837848a(8) =3472210a(9) =14245712a(10) =57796288a(11) =232692368a(12) =930069146a(13) =3696103032a(14) =14612457534a(15) =57516087912a(16) =225502135332a(17) =881077245816
External references
- oeis: A268770