Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.
A241437
Number of 3 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.
Terms
- a(0) =4a(1) =2a(2) =22a(3) =74a(4) =158a(5) =448a(6) =1272a(7) =3284a(8) =8331a(9) =23365a(10) =63819a(11) =159963a(12) =450553a(13) =1178189a(14) =3085252a(15) =8574583a(16) =21981254a(17) =59397292a(18) =161093107a(19) =416692229a(20) =1133829778a(21) =3023012096a(22) =7951525097a(23) =21508340343a(24) =56988406704a(25) =151552827477a(26) =406957891025
External references
- oeis: A241437