T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

A278807

T(n,k)=Number of nXk 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.

Terms

    a(0) =3a(1) =6a(2) =6a(3) =10a(4) =22a(5) =10a(6) =15a(7) =63a(8) =63a(9) =15a(10) =21a(11) =154a(12) =322a(13) =154a(14) =21a(15) =28a(16) =336a(17) =1439a(18) =1439a(19) =336a(20) =28a(21) =36a(22) =672a(23) =5767a(24) =12958a(25) =5767a(26) =672a(27) =36a(28) =45a(29) =1254

External references