Number of n X 3 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A280280
Number of n X 3 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =1a(1) =46a(2) =996a(3) =16860a(4) =259040a(5) =3753846a(6) =52433492a(7) =713549156a(8) =9525564453a(9) =125290653912
External references
- oeis: A280280