Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.

A260977

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.

Terms

    a(0) =1146a(1) =925a(2) =1288a(3) =2714a(4) =4592a(5) =9144a(6) =14672a(7) =29768a(8) =50432a(9) =101372a(10) =171124a(11) =340878a(12) =582500a(13) =1157798a(14) =1990592a(15) =3921926a(16) =6784120a(17) =13315792a(18) =23162244a(19) =45162484a(20) =78973048a(21) =153447472a(22) =269491716a(23) =520685028a(24) =918595544a(25) =1769858760a(26) =3133573780

External references