T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101.

A260927

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101.

Terms

    a(0) =36a(1) =48a(2) =48a(3) =104a(4) =68a(5) =104a(6) =186a(7) =146a(8) =146a(9) =186a(10) =297a(11) =279a(12) =401a(13) =279a(14) =297a(15) =491a(16) =468a(17) =896a(18) =896a(19) =468a(20) =491a(21) =883a(22) =831a(23) =1800a(24) =2208a(25) =1800a(26) =831a(27) =883a(28) =1489a(29) =1528

External references