Number of nX2 0..3 arrays with row sums unimodal and column sums inverted unimodal.
A223660
Number of nX2 0..3 arrays with row sums unimodal and column sums inverted unimodal.
Terms
- a(0) =16a(1) =256a(2) =3060a(3) =29922a(4) =252912a(5) =1912914a(6) =13254601a(7) =85563043a(8) =521069404a(9) =3022541224a(10) =16826714534a(11) =90449485556a(12) =471770734372
External references
- oeis: A223660