Lower triangular matrix, read by rows: T(i,j) = number of ways i seats can be occupied by any number k (0<=k<=j<=i) of persons.

A086885

Lower triangular matrix, read by rows: T(i,j) = number of ways i seats can be occupied by any number k (0<=k<=j<=i) of persons.

Terms

    a(0) =2a(1) =3a(2) =7a(3) =4a(4) =13a(5) =34a(6) =5a(7) =21a(8) =73a(9) =209a(10) =6a(11) =31a(12) =136a(13) =501a(14) =1546a(15) =7a(16) =43a(17) =229a(18) =1045a(19) =4051a(20) =13327a(21) =8a(22) =57a(23) =358a(24) =1961a(25) =9276a(26) =37633a(27) =130922a(28) =9a(29) =73

External references