Number of 2 X n 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281206
Number of 2 X n 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =2a(2) =14a(3) =28a(4) =52a(5) =94a(6) =166a(7) =290a(8) =502a(9) =864a(10) =1480a(11) =2526a(12) =4298a(13) =7294a(14) =12350a(15) =20868a(16) =35196a(17) =59262a(18) =99630a(19) =167258a(20) =280422a(21) =469576a(22) =785424a(23) =1312318a(24) =2190482a(25) =3652854a(26) =6086126a(27) =10131820a(28) =16853572a(29) =28013854
External references
- oeis: A281206