Triangle T(n,k) of number of minimal 2-covers of a labeled n-set that cover k points of that set uniquely (k=2,..,n).
A057963
Triangle T(n,k) of number of minimal 2-covers of a labeled n-set that cover k points of that set uniquely (k=2,..,n).
Terms
- a(0) =1a(1) =3a(2) =3a(3) =6a(4) =12a(5) =7a(6) =10a(7) =30a(8) =35a(9) =15a(10) =15a(11) =60a(12) =105a(13) =90a(14) =31a(15) =21a(16) =105a(17) =245a(18) =315a(19) =217a(20) =63a(21) =28a(22) =168a(23) =490a(24) =840a(25) =868a(26) =504a(27) =127a(28) =36a(29) =252
External references
- oeis: A057963