Number of 3 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
A297459
Number of 3 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
Terms
- a(0) =8a(1) =19a(2) =92a(3) =285a(4) =1143a(5) =3933a(6) =14817a(7) =52868a(8) =194822a(9) =704284a(10) =2575201a(11) =9352440a(12) =34103042a(13) =124055943a(14) =451921339a(15) =1644897204a(16) =5990104595a(17) =21807171062a(18) =79403933671a(19) =289093577711
External references
- oeis: A297459