Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281761
Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =2a(1) =40a(2) =152a(3) =560a(4) =1872a(5) =5948a(6) =18358a(7) =55048a(8) =162120a(9) =471340a(10) =1355236a(11) =3862260a(12) =10924470a(13) =30702868a(14) =85814996a(15) =238711156a(16) =661252798a(17) =1824976204a(18) =5020176620a(19) =13769014596a(20) =37664818800a(21) =102784444960a(22) =279880084494a(23) =760592396664
External references
- oeis: A281761