Number of nX3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 2 neighboring 1s.
A296381
Number of nX3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 2 neighboring 1s.
Terms
- a(0) =4a(1) =28a(2) =127a(3) =641a(4) =3237a(5) =16248a(6) =81661a(7) =410199a(8) =2061212a(9) =10356724a(10) =52036349a(11) =261457677a(12) =1313693921a(13) =6600648217a(14) =33164941657a(15) =166637153693a(16) =837267911142
External references
- oeis: A296381