Number of 2 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 2,11,n can be permuted, see formula.
A140934
Number of 2 X 11 matrices with elements in 0..n with each row and each column in nondecreasing order. 2,11,n can be permuted, see formula.
Terms
- a(0) =1a(1) =78a(2) =2366a(3) =41405a(4) =496860a(5) =4504864a(6) =32821152a(7) =200443464a(8) =1057896060a(9) =4936848280a(10) =20734762776a(11) =79483257308a(12) =281248448936a(13) =927192688800
External references
- oeis: A140934