Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..1 2 X n array.
A218898
Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..1 2 X n array.
Terms
- a(0) =4a(1) =6a(2) =18a(3) =34a(4) =86a(5) =180a(6) =426a(7) =930a(8) =2140a(9) =4758a(10) =10818a(11) =24240a(12) =54834a(13) =123274a(14) =278260a(15) =626446a(16) =1412746a(17) =3182416a(18) =7174106a(19) =16164834a(20) =36434260a(21) =82103270a(22) =185041218a(23) =417002816a(24) =939796802a(25) =2117936730a(26) =4773120596a(27) =10756848350a(28) =24242204506
External references
- oeis: A218898