"DFK" (bracelet, size, unlabeled) transform of 1,3,5,7...

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =12a(5) =31a(6) =56a(7) =107a(8) =168a(9) =372a(10) =830a(11) =1302a(12) =2527a(13) =4370a(14) =9478a(15) =25268a(16) =38655a(17) =72876a(18) =133073a(19) =238255a(20) =477957a(21) =1357657a(22) =1967349a(23) =3747310a(24) =6374674a(25) =11569115a(26) =19219719a(27) =38342864a(28) =104469668a(29) =150682797