Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.
A241353
Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.
Terms
- a(0) =8a(1) =23a(2) =61a(3) =228a(4) =615a(5) =2062a(6) =6380a(7) =17325a(8) =60671a(9) =174659a(10) =522051a(11) =1719745a(12) =4845006a(13) =15397618a(14) =47028894a(15) =137168570a(16) =438587280a(17) =1296963342a(18) =3957057163a(19) =12275537070a(20) =36363799509a(21) =112893614704a(22) =341992697428
External references
- oeis: A241353