Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300541
Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =11a(2) =71a(3) =450a(4) =2879a(5) =18365a(6) =117146a(7) =747252a(8) =4766519a(9) =30404411a(10) =193941921a(11) =1237105726a(12) =7891179813a(13) =50335810076a(14) =321079209472
External references
- oeis: A300541