Number of (n+2) X (4+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 00000101 or 00000111.

A261707

Number of (n+2) X (4+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 00000101 or 00000111.

Terms

    a(0) =338a(1) =462a(2) =662a(3) =675a(4) =734a(5) =1443a(6) =1416a(7) =1486a(8) =2556a(9) =3004a(10) =3232a(11) =4244a(12) =7152a(13) =6998a(14) =7632a(15) =14546a(16) =15458a(17) =16486a(18) =25442a(19) =35466a(20) =36164a(21) =44018a(22) =77572a(23) =78884a(24) =85814a(25) =147948a(26) =177648a(27) =185492a(28) =258962a(29) =398694

External references