Floor of the expected value of number of trials until exactly one cell is empty in a random distribution of n balls in n cells.

A210112

Floor of the expected value of number of trials until exactly one cell is empty in a random distribution of n balls in n cells.

Terms

    a(0) =2a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =14a(7) =29a(8) =61a(9) =129a(10) =282a(11) =623a(12) =1400a(13) =3189a(14) =7347a(15) =17101a(16) =40167a(17) =95110a(18) =226841a(19) =544555a(20) =1314983a(21) =3192458a(22) =7788521a(23) =19086807a(24) =46968280a(25) =116019696a(26) =287602234a(27) =715281652a(28) =1784383956a(29) =4464139806

External references