Number of nX3 0..1 arrays with row sums unimodal and column sums inverted unimodal.
A223778
Number of nX3 0..1 arrays with row sums unimodal and column sums inverted unimodal.
Terms
- a(0) =7a(1) =53a(2) =330a(3) =1809a(4) =8940a(5) =41257a(6) =180670a(7) =756800a(8) =3066706a(9) =12093628a(10) =46563397a(11) =175879412a(12) =653526033a(13) =2392564820a(14) =8651185991a(15) =30941217363a(16) =109551653219a(17) =384528798543
External references
- oeis: A223778