Number of degree n polynomials over GF(2) (with nonzero constant term) at Hamming distance 2 from some irreducible polynomial.

A128902

Number of degree n polynomials over GF(2) (with nonzero constant term) at Hamming distance 2 from some irreducible polynomial.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =7a(6) =14a(7) =34a(8) =72a(9) =157a(10) =326a(11) =689a(12) =1418a(13) =2935a(14) =6010a(15) =12304a(16) =25058a(17) =51004a(18) =103478a(19) =209767a(20) =424430a(21) =858019a(22) =1732430a(23) =3495434a(24) =7046432a(25) =14196421a(26) =28583424a(27) =57522469a(28) =115704938a(29) =232645189

External references