Number of "sets of lists" (cf. A000262) with an odd number of lists.

A088313

Number of "sets of lists" (cf. A000262) with an odd number of lists.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =7a(4) =36a(5) =241a(6) =1950a(7) =18271a(8) =193256a(9) =2270017a(10) =29272410a(11) =410815351a(12) =6231230412a(13) =101560835377

External references