Number of n X 5 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.

A297296

Number of n X 5 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.

Terms

    a(0) =1a(1) =4a(2) =9a(3) =21a(4) =49a(5) =114a(6) =266a(7) =620a(8) =1446a(9) =3372a(10) =7864a(11) =18340a(12) =42772a(13) =99752a(14) =232640a(15) =542560a(16) =1265352a(17) =2951040a(18) =6882384a(19) =16051024a(20) =37434032a(21) =87303264a(22) =203607776a(23) =474851968a(24) =1107444896a(25) =2582771648a(26) =6023513600a(27) =14047976768a(28) =32762547648a(29) =76408478336

External references