Number of (n+2)X3 binary arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum.

A187932

Number of (n+2)X3 binary arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum.

Terms

    a(0) =48a(1) =44a(2) =304a(3) =784a(4) =3188a(5) =10296a(6) =38020a(7) =131184a(8) =470896a(9) =1657548a(10) =5909972a(11) =20946476a(12) =74559876a(13) =264925180a(14) =942717628a(15) =3352989040a(16) =11932074280a(17) =42457171692a(18) =151103252592a(19) =537762244964

External references