Number of 4Xn 0..2 arrays with rows and antidiagonals unimodal.
A223977
Number of 4Xn 0..2 arrays with rows and antidiagonals unimodal.
Terms
- a(0) =81a(1) =6561a(2) =186004a(3) =2558848a(4) =22935921a(5) =153196498a(6) =822895397a(7) =3731866676a(8) =14772553616a(9) =52279545002a(10) =168389072033a(11) =500454038667
External references
- oeis: A223977