Number of partitions of n into parts of sorts {1, 2, ... } which are introduced in ascending order such that sorts of adjacent parts are different.

A262496

Number of partitions of n into parts of sorts {1, 2, ... } which are introduced in ascending order such that sorts of adjacent parts are different.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =27a(6) =87a(7) =312a(8) =1269a(9) =5703a(10) =28082a(11) =149643a(12) =855938a(13) =5217753a(14) =33712046a(15) =229799508a(16) =1646314498a(17) =12355371024a(18) =96861186897a(19) =791258791159

External references