Number of partitions of an n-element set that have at least one odd block.

A089004

Number of partitions of an n-element set that have at least one odd block.

Terms

    a(0) =1a(1) =1a(2) =5a(3) =11a(4) =52a(5) =172a(6) =877a(7) =3761a(8) =21147a(9) =109419a(10) =678570a(11) =4063248a(12) =27644437a(13) =186525861a(14) =1382958545a(15) =10323844183a(16) =82864869804a(17) =675378319788

External references