Number T(n,k) of X-rays of n X n binary matrices with exactly k ones; triangle T(n,k), n>=0, 0<=k<=n^2, read by rows.
A290057
Number T(n,k) of X-rays of n X n binary matrices with exactly k ones; triangle T(n,k), n>=0, 0<=k<=n^2, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =4a(6) =3a(7) =1a(8) =1a(9) =5a(10) =13a(11) =23a(12) =30a(13) =30a(14) =23a(15) =13a(16) =5a(17) =1a(18) =1a(19) =7a(20) =26a(21) =68a(22) =139a(23) =234a(24) =334a(25) =411a(26) =440a(27) =411a(28) =334a(29) =234
External references
- oeis: A290057