Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222901
Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =1a(1) =7a(2) =45a(3) =767a(4) =4909a(5) =119393a(6) =759891a(7) =20299463a(8) =130579169a(9) =3588643955a(10) =23230932391a(11) =647426033879
External references
- oeis: A222901