Number of 4Xn binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly decreasing order.
A181280
Number of 4Xn binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly decreasing order.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =58a(4) =1629a(5) =28924a(6) =507052a(7) =8211776a(8) =133693904a(9) =2140571200a(10) =34361115072a(11) =549587348992
External references
- oeis: A181280