Number of nonzero elements in GF(2^n) that are 13th powers.

Terms

a(0) =1a(1) =3a(2) =7a(3) =15a(4) =31a(5) =63a(6) =127a(7) =255a(8) =511a(9) =1023a(10) =2047a(11) =315a(12) =8191a(13) =16383a(14) =32767a(15) =65535a(16) =131071a(17) =262143a(18) =524287a(19) =1048575a(20) =2097151a(21) =4194303a(22) =8388607a(23) =1290555a(24) =33554431a(25) =67108863a(26) =134217727a(27) =268435455a(28) =536870911a(29) =1073741823