Number of n X 2 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
A285024
Number of n X 2 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =2a(2) =6a(3) =26a(4) =104a(5) =402a(6) =1578a(7) =6196a(8) =24310a(9) =95446a(10) =374872a(11) =1472938a(12) =5790024a(13) =22768624a(14) =89562540a(15) =352395768a(16) =1386874908a(17) =5459330780a(18) =21494802570a(19) =84648191106a(20) =333419873528
External references
- oeis: A285024