Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having zero permanent.
A206248
Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having zero permanent.
Terms
- a(0) =49a(1) =361a(2) =1600a(3) =9409a(4) =47089a(5) =258064a(6) =1343281a(7) =7198489a(8) =37945600a(9) =201895681a(10) =1068570721a(11) =5672499856a(12) =30061664689a(13) =159465247561a(14) =845443470400
External references
- oeis: A206248