Number of 3 X n 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 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.
A241358
Number of 3 X n 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 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) =4a(1) =3a(2) =19a(3) =51a(4) =61a(5) =230a(6) =641a(7) =960a(8) =3746a(9) =9339a(10) =16659a(11) =60981a(12) =137870a(13) =288484a(14) =962239a(15) =2106198a(16) =4825844a(17) =14944563a(18) =32681302a(19) =79714689a(20) =232184355a(21) =513198469a(22) =1304385350a(23) =3611732771a(24) =8129991862a(25) =21132067461a(26) =56282787035a(27) =129448737499
External references
- oeis: A241358