Number of (n+1) X 3 binary arrays with every 2 X 2 subblock sum equal to some horizontal or vertical neighbor 2 X 2 subblock sum.

A185490

Number of (n+1) X 3 binary arrays with every 2 X 2 subblock sum equal to some horizontal or vertical neighbor 2 X 2 subblock sum.

Terms

    a(0) =24a(1) =128a(2) =708a(3) =3792a(4) =20872a(5) =114724a(6) =631720a(7) =3480976a(8) =19187324a(9) =105781152a(10) =583235304a(11) =3215888676a(12) =17732499352a(13) =97778898080a(14) =539167491548

External references