Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302363
Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =20a(2) =20a(3) =77a(4) =209a(5) =774a(6) =3143a(7) =13556a(8) =60280a(9) =272792a(10) =1243804a(11) =5692133a(12) =26100174a(13) =119782344a(14) =549950950a(15) =2525484907a(16) =11598683442a(17) =53271277746a(18) =244673796303
External references
- oeis: A302363