Where records occur in A249161.

Terms

a(0) =0a(1) =6a(2) =122a(3) =922a(4) =1994a(5) =3986a(6) =29618a(7) =59234a(8) =127730a(9) =255458a(10) =510914a(11) =1021826a(12) =7582914a(13) =15165826a(14) =30331650a(15) =60663298