Number of n X 5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to 2.

A197058

Number of n X 5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to 2.

Terms

    a(0) =1a(1) =5a(2) =14a(3) =28a(4) =48a(5) =90a(6) =200a(7) =447a(8) =937a(9) =1881a(10) =3813a(11) =7947a(12) =16720a(13) =34862a(14) =71998a(15) =148612a(16) =308152a(17) =640701a(18) =1330955a(19) =2759769a(20) =5719391a(21) =11860647a(22) =24611330a(23) =51069476a(24) =105937956a(25) =219719928a(26) =455740768a(27) =945408061a(28) =1961252075a(29) =4068435185

External references