Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A318079
Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =11a(2) =18a(3) =34a(4) =51a(5) =126a(6) =272a(7) =616a(8) =1347a(9) =2910a(10) =6602a(11) =15218a(12) =34152a(13) =76465a(14) =171830a(15) =389133a(16) =881565a(17) =1994946a(18) =4498694a(19) =10161192a(20) =22988303a(21) =52066761a(22) =117762774a(23) =266167800a(24) =601747214a(25) =1361703901a(26) =3081288330a(27) =6969596507a(28) =15760588028
External references
- oeis: A318079