Inverse of A304085.

Terms

a(0) =0a(1) =1a(2) =3a(3) =6a(4) =11a(5) =2a(6) =20a(7) =7a(8) =37a(9) =13a(10) =70a(11) =5a(12) =134a(13) =23a(14) =15a(15) =259a(16) =512a(17) =45a(18) =1031a(19) =10a(20) =26a(21) =75a(22) =2061a(23) =4a(24) =3974a(25) =149a(26) =49a(27) =29a(28) =8148a(29) =14