Numbers 2*k+1 for which numbers A006694(k) are record values for A006694.

Terms

a(0) =1a(1) =3a(2) =7a(3) =15a(4) =21a(5) =31a(6) =45a(7) =63a(8) =93a(9) =105a(10) =127a(11) =189a(12) =217a(13) =255a(14) =315a(15) =341a(16) =455a(17) =511a(18) =819a(19) =1023a(20) =1365a(21) =2047a(22) =3591a(23) =3855a(24) =4095a(25) =5461a(26) =8191a(27) =12483a(28) =13107a(29) =16383