Number of n X 3 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281200
Number of n X 3 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =1a(1) =14a(2) =56a(3) =168a(4) =448a(5) =1120a(6) =2688a(7) =6272a(8) =14336a(9) =32256a(10) =71680a(11) =157696a(12) =344064a(13) =745472a(14) =1605632a(15) =3440640a(16) =7340032a(17) =15597568a(18) =33030144a(19) =69730304a(20) =146800640a(21) =308281344a(22) =645922816a(23) =1350565888a(24) =2818572288a(25) =5872025600a(26) =12213813248a(27) =25367150592
External references
- oeis: A281200