Positions of records in A249695.

Terms

a(0) =0a(1) =4a(2) =6a(3) =13a(4) =15a(5) =27a(6) =47a(7) =55a(8) =111a(9) =223a(10) =447a(11) =895a(12) =1791a(13) =3583a(14) =7167a(15) =14335a(16) =28671a(17) =57343a(18) =114687a(19) =229375a(20) =458751a(21) =917503a(22) =1835007a(23) =3670015a(24) =7340031a(25) =14680063a(26) =29360127a(27) =58720255a(28) =117440511