Number of 2n X 2 0..2 arrays with values 0..2 introduced in row major order and each element equal to an odd number of horizontal and vertical neighbors.
A198474
Number of 2n X 2 0..2 arrays with values 0..2 introduced in row major order and each element equal to an odd number of horizontal and vertical neighbors.
Terms
- a(0) =2a(1) =12a(2) =76a(3) =492a(4) =3212a(5) =21036a(6) =137932a(7) =904812a(8) =5936396a(9) =38950572a(10) =255572812a(11) =1676946156a(12) =11003350412a(13) =72199015212a(14) =473737530316
External references
- oeis: A198474