Number of n X 5 0..1 arrays with rows nondecreasing and antidiagonals unimodal.
A224130
Number of n X 5 0..1 arrays with rows nondecreasing and antidiagonals unimodal.
Terms
- a(0) =6a(1) =36a(2) =175a(3) =760a(4) =3149a(5) =12874a(6) =52581a(7) =215136a(8) =881461a(9) =3613806a(10) =14818385a(11) =60762820a(12) =249150689a(13) =1021591594a(14) =4188791861a(15) =17175102296a(16) =70422257341a(17) =288749179526
External references
- oeis: A224130