Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.

A283538

Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.

Terms

    a(0) =7a(1) =27a(2) =127a(3) =573a(4) =2615a(5) =11903a(6) =54211a(7) =246869a(8) =1124239a(9) =5119755a(10) =23315255a(11) =106177157a(12) =483528423a(13) =2201977727a(14) =10027757771a(15) =45666186717a(16) =207962802543a(17) =947057995307

External references