Number of n X 3 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent.
A163734
Number of n X 3 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =9a(4) =17a(5) =39a(6) =95a(7) =217a(8) =473a(9) =1011a(10) =2147a(11) =4545a(12) =9601a(13) =20255a(14) =42703a(15) =90001a(16) =189657a(17) =399627a(18) =842019a(19) =1774105a(20) =3737937a(21) =7875575a(22) =16593247a(23) =34960681a(24) =73659385a(25) =155194435a(26) =326982211a(27) =688925201a(28) =1451509889a(29) =3058214319
External references
- oeis: A163734