Number of nX1 0..1 arrays with no 1 equal to more than one of its king-move neighbors, with the exception of exactly two elements.

A282831

Number of nX1 0..1 arrays with no 1 equal to more than one of its king-move neighbors, with the exception of exactly two elements.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =5a(6) =13a(7) =29a(8) =65a(9) =143a(10) =307a(11) =652a(12) =1369a(13) =2846a(14) =5870a(15) =12022a(16) =24470a(17) =49538a(18) =99802a(19) =200195a(20) =400004a(21) =796395a(22) =1580451a(23) =3127083a(24) =6170303a(25) =12144313a(26) =23846197a(27) =46721478a(28) =91354371a(29) =178285068

External references