Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301905
Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =10a(2) =12a(3) =96a(4) =320a(5) =1934a(6) =8781a(7) =49709a(8) =253844a(9) =1413100a(10) =7620270a(11) =42580016a(12) =235818861a(13) =1324997099a(14) =7432214130a(15) =41943560072a(16) =236751899580
External references
- oeis: A301905