Number of partitions of 2n into parts of exactly n sorts which are introduced in ascending order such that sorts of adjacent parts are different.

A262529

Number of partitions of 2n into parts of exactly n sorts which are introduced in ascending order such that sorts of adjacent parts are different.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =31a(4) =464a(5) =10423a(6) =307123a(7) =11087757a(8) =471750268a(9) =23064505722

External references