Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 2 array with new integer colors introduced in row major order.
A216078
Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 2 array with new integer colors introduced in row major order.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =27a(5) =87a(6) =409a(7) =1657a(8) =9089a(9) =43833a(10) =272947a(11) =1515903a(12) =10515147a(13) =65766991a(14) =501178937a(15) =3473600465a(16) =28773452321a(17) =218310229201
External references
- oeis: A216078