Number of 4Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303316
Number of 4Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =6a(2) =11a(3) =36a(4) =50a(5) =128a(6) =439a(7) =1085a(8) =2431a(9) =6452a(10) =17455a(11) =43514a(12) =108524a(13) =281615a(14) =726261a(15) =1839731a(16) =4685152a(17) =12025643a(18) =30754258a(19) =78396104a(20) =200278695a(21) =512290781a(22) =1308785863a(23) =3342222476a(24) =8540451095a(25) =21826102586a(26) =55761123412a(27) =142456533311
External references
- oeis: A303316