Number of nX5 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302160
Number of nX5 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =25a(2) =20a(3) =51a(4) =140a(5) =280a(6) =621a(7) =1451a(8) =3189a(9) =7136a(10) =16179a(11) =36212a(12) =81254a(13) =182957a(14) =410889a(15) =922943a(16) =2074950a(17) =4662563a(18) =10476618a(19) =23545560a(20) =52912545a(21) =118903861a(22) =267210837a(23) =600490496a(24) =1349441183a(25) =3032538210a(26) =6814874446a(27) =15314690189a(28) =34415928927
External references
- oeis: A302160