Records in A175046.

Terms

a(0) =3a(1) =12a(2) =24a(3) =51a(4) =99a(5) =204a(6) =396a(7) =408a(8) =819a(9) =1587a(10) =1635a(11) =3276a(12) =6348a(13) =6540a(14) =6552a(15) =13107a(16) =25395a(17) =26163a(18) =26211a(19) =52428a(20) =101580a(21) =104652a(22) =104844a(23) =104856a(24) =209715a(25) =406323a(26) =418611a(27) =419379a(28) =419427a(29) =838860