Rectangular array read by antidiagonals: a(n, k) is the number of ways to put k labeled objects into n labeled boxes so that there are no boxes with exactly one object (n, k >= 1).
A131103
Rectangular array read by antidiagonals: a(n, k) is the number of ways to put k labeled objects into n labeled boxes so that there are no boxes with exactly one object (n, k >= 1).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =2a(5) =1a(6) =0a(7) =3a(8) =2a(9) =1a(10) =0a(11) =4a(12) =3a(13) =8a(14) =1a(15) =0a(16) =5a(17) =4a(18) =21a(19) =22a(20) =1a(21) =0a(22) =6a(23) =5a(24) =40a(25) =63a(26) =52a(27) =1a(28) =0a(29) =7
External references
- oeis: A131103