Number of non-isomorphic self-dual set multipartitions (multisets of sets) of weight n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =6a(6) =10a(7) =17a(8) =32a(9) =56a(10) =98a(11) =177a(12) =335a(13) =620a(14) =1164a(15) =2231a(16) =4349a(17) =8511a(18) =16870a(19) =33844a(20) =68746a(21) =140894a(22) =291698a(23) =610051a(24) =1288594a(25) =2745916a(26) =5903988a(27) =12805313a(28) =28010036a(29) =61764992