T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor.

A232414

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor.

Terms

    a(0) =15a(1) =159a(2) =109a(3) =973a(4) =2689a(5) =611a(6) =6477a(7) =44971a(8) =48971a(9) =3635a(10) =46713a(11) =876881a(12) =2189991a(13) =890283a(14) =21717a(15) =334521a(16) =18073053a(17) =119994763a(18) =107913855a(19) =16262989a(20) =129323a(21) =2375879a(22) =366033741a(23) =7049296087a(24) =16776955943a(25) =5322933313a(26) =296516955a(27) =770747

External references