Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302376
Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =15a(2) =76a(3) =475a(4) =2771a(5) =16451a(6) =97160a(7) =574671a(8) =3397622a(9) =20089993a(10) =118787443a(11) =702368950a(12) =4152971123a(13) =24555730380a(14) =145193342488a(15) =858500551625
External references
- oeis: A302376