Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222428
Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =4a(1) =36a(2) =298a(3) =7929a(4) =77053a(5) =2601092a(6) =28654054a(7) =1031825766a(8) =11887826140a(9) =435680320590
External references
- oeis: A222428