Number of n X 4 binary arrays with each 1 adjacent to exactly one 0 vertically and one 0 horizontally.

A183346

Number of n X 4 binary arrays with each 1 adjacent to exactly one 0 vertically and one 0 horizontally.

Terms

    a(0) =1a(1) =17a(2) =25a(3) =63a(4) =163a(5) =387a(6) =943a(7) =2289a(8) =5561a(9) =13529a(10) =32865a(11) =79847a(12) =194059a(13) =471603a(14) =1146015a(15) =2784897a(16) =6767617a(17) =16446057a(18) =39965513a(19) =97120103a(20) =236011723a(21) =573532427a(22) =1393741359a(23) =3386931441a(24) =8230584465a(25) =20001149033a(26) =48604804537a(27) =118114565295

External references