Irregular triangle of numerators of the average value of the first letter over all derangements of {1, 2, ..., n} with k descents.

A332009

Irregular triangle of numerators of the average value of the first letter over all derangements of {1, 2, ..., n} with k descents.

Terms

    a(0) =2a(1) =5a(2) =11a(3) =3a(4) =4a(5) =23a(6) =10a(7) =17a(8) =47a(9) =367a(10) =173a(11) =121a(12) =6a(13) =95a(14) =1431a(15) =3973a(16) =2513a(17) =331a(18) =191a(19) =567a(20) =1395a(21) =8011a(22) =391a(23) =761a(24) =8a(25) =383a(26) =8615a(27) =139897a(28) =78483a(29) =27201

External references