Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001001.

A260291

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001001.

Terms

    a(0) =966a(1) =1524a(2) =3764a(3) =7146a(4) =10952a(5) =29166a(6) =62980a(7) =101512a(8) =225924a(9) =560690a(10) =1001440a(11) =1911188a(12) =4763260a(13) =9721182a(14) =17438056a(15) =40009846a(16) =89915636a(17) =165964636a(18) =343452844a(19) =797625118a(20) =1580513144a(21) =3066061396a(22) =6929750012a(23) =14700161924a(24) =28262011124

External references