Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.
A007799
Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =1a(8) =3a(9) =6a(10) =9a(11) =5a(12) =1a(13) =4a(14) =12a(15) =30a(16) =44a(17) =26a(18) =3a(19) =1a(20) =5a(21) =20a(22) =70a(23) =170a(24) =250a(25) =169a(26) =35a(27) =1a(28) =6a(29) =30
External references
- oeis: A007799