Search: id:A014580
Results 1-1 of 1 results found.

%I A014580
%S A014580 2,3,7,11,13,19,25,31,37,41,47,55,59,61,67,73,87,91,97,103,109,115,
%T A014580 117,131,137,143,145,157,167,171,185,191,193,203,211,213,229,239,
%U A014580 241,247,253,283,285,299,301,313,319,333,351,355,357,361,369,375
%N A014580 Binary irreducible polynomials (primes in ring GF(2)[ X ]), evaluated 
               at X=2.
%C A014580 Or, binary irreducible polynomials, interpreted as binary vectors, then 
               written in base 10.
%H A014580 T. D. Noe, <a href="b014580.txt">Table of n, a(n) for n=1..1377</a> (through 
               degree 13)
%H A014580 <a href="Sindx_Ge.html#GF2X">Index entries for sequences operating on 
               GF(2)[X]-polynomials</a>
%e A014580 x^4 + x^3 + 1 -> 16+8+1 = 25. Or, x^4 + x^3 + 1 -> 11001 (binary) = 25 
               (decimal).
%Y A014580 Cf. A000031, A001037, A048720. Written in binary: A058943.
%Y A014580 Characteristic function: A091225. Inverse: A091227. a(n) = A091202(A000040(n)). 
               Almost complement of A091242. Union of A091206 & A091214 and also 
               of A091250 & A091252. First differences: A091223. Apart from a(2)=3, 
               a subset of A000069.
%Y A014580 Sequence in context: A145673 A040116 A155153 this_sequence A091206 A038963 
               A167609
%Y A014580 Adjacent sequences: A014577 A014578 A014579 this_sequence A014581 A014582 
               A014583
%K A014580 nonn
%O A014580 1,1
%A A014580 petry(AT)accessone.com (David Petry)

Search completed in 0.002 seconds