Number of n X 2 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
A279866
Number of n X 2 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =1a(1) =4a(2) =33a(3) =96a(4) =255a(5) =610a(6) =1437a(7) =3292a(8) =7451a(9) =16662a(10) =36921a(11) =81200a(12) =177399a(13) =385450a(14) =833365a(15) =1794180a(16) =3848019a(17) =8225214a(18) =17528049a(19) =37250392a(20) =78966831a(21) =167021394a(22) =352528653a(23) =742650796a(24) =1561730955a(25) =3278806630a(26) =6873273257a(27) =14387809152a(28) =30078027111
External references
- oeis: A279866