Number of 0..1 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 2.

A200661

Number of 0..1 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 2.

Terms

    a(0) =2a(1) =3a(2) =5a(3) =8a(4) =12a(5) =17a(6) =25a(7) =36a(8) =51a(9) =72a(10) =102a(11) =144a(12) =202a(13) =284a(14) =399a(15) =560a(16) =785a(17) =1101a(18) =1544a(19) =2164a(20) =3033a(21) =4251a(22) =5958a(23) =8349a(24) =11700a(25) =16396a(26) =22976a(27) =32196a(28) =45116a(29) =63221

External references