Number of free subsets of multiplicative group of GF(2^n).

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =12a(5) =30a(6) =54a(7) =127a(8) =226a(9) =508a(10) =930a(11) =2046a(12) =3780a(13) =8182a(14) =15288a(15) =32767a(16) =61680a(17) =131042a(18) =248346a(19) =524284