Number of 2Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4.
A239820
Number of 2Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4.
Terms
- a(0) =5a(1) =23a(2) =132a(3) =729a(4) =3951a(5) =21602a(6) =118253a(7) =646306a(8) =3532732a(9) =19315270a(10) =105601487a(11) =577330665a(12) =3156353205a(13) =17256335056a(14) =94343160597a(15) =515789128277
External references
- oeis: A239820