Number of n X 2 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it, modulo 4.
A239399
Number of n X 2 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it, modulo 4.
Terms
- a(0) =4a(1) =23a(2) =129a(3) =698a(4) =3805a(5) =20818a(6) =113774a(7) =621754a(8) =3399032a(9) =18582965a(10) =101593258a(11) =555419633a(12) =3036563927a(13) =16601366841a(14) =90762262155a(15) =496211843813
External references
- oeis: A239399