Duplicate of A024166.

Terms

a(0) =0a(1) =1a(2) =10a(3) =46a(4) =146a(5) =371a(6) =812a(7) =1596a(8) =2892a(9) =4917a(10) =7942a(11) =12298a(12) =18382a(13) =26663a(14) =37688a(15) =52088