Number of nX2 0..1 arrays with no 1 equal to more than three of its king-move neighbors.
A282393
Number of nX2 0..1 arrays with no 1 equal to more than three of its king-move neighbors.
Terms
- a(0) =4a(1) =16a(2) =57a(3) =213a(4) =796a(5) =2964a(6) =11049a(7) =41193a(8) =153556a(9) =572424a(10) =2133897a(11) =7954765a(12) =29653852a(13) =110543980a(14) =412087129a(15) =1536183105a(16) =5726601012a(17) =21347689024a(18) =79580160153a(19) =296659834437
External references
- oeis: A282393