Number T(n,m) of n X m matrices over {0,1,2} with all row and column sums equal to 1 or 2, m=0,..,2*n.
A062154
Number T(n,m) of n X m matrices over {0,1,2} with all row and column sums equal to 1 or 2, m=0,..,2*n.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =1a(4) =0a(5) =1a(6) =13a(7) =18a(8) =6a(9) =0a(10) =0a(11) =18a(12) =189a(13) =450a(14) =360a(15) =90a(16) =0a(17) =0a(18) =6a(19) =450a(20) =4842a(21) =16380a(22) =22140a(23) =12600a(24) =2520a(25) =0a(26) =0a(27) =0a(28) =360a(29) =16380
External references
- oeis: A062154