Number of m-shape ordered set partitions, square array read by ascending antidiagonals, A(m, n) for m, n >= 0.
A260883
Number of m-shape ordered set partitions, square array read by ascending antidiagonals, A(m, n) for m, n >= 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =1a(7) =1a(8) =3a(9) =9a(10) =1a(11) =1a(12) =7a(13) =13a(14) =35a(15) =1a(16) =1a(17) =21a(18) =121a(19) =75a(20) =161a(21) =1a(22) =1a(23) =71a(24) =1849a(25) =3907a(26) =541a(27) =913a(28) =1a(29) =1
External references
- oeis: A260883