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A234752
Binary encodings of reducible polynomials over GF(2)that are fixed by blue code: a(n) = A091242(A234749(n)).
2
6, 18, 20, 21, 106, 107, 108, 120, 121, 126, 127, 258, 259, 260, 261, 272, 273, 278, 279, 360, 366, 367, 378, 380, 381, 1546, 1547, 1548, 1549, 1560, 1561, 1566, 1567, 1632, 1633, 1638, 1639, 1650, 1651, 1652, 1653, 1800, 1801, 1806, 1818, 1819, 1820, 1890, 1892, 1893, 1904, 1905, 1910, 1911
OFFSET
1,1
COMMENTS
Irreducible polynomials over GF(2) (A014580) fixed by blue code (A193231) seem to be much rarer. The first 22 cases are: 7, 19, 109, 361, 379, 1807, 1821, 1891, 4645, 4663, 4897, 4915, 4941, 27327, 27329, 27589, 27607, 27829, 27851, 28067, 28081, 28125.
LINKS
FORMULA
a(n) = A091242(A234749(n)).
PROG
(Scheme) (define (A234752 n) (A091242 (A234749 n)))
CROSSREFS
Intersection of A091242 and A118666.
Sequence in context: A045857 A074791 A093106 * A370865 A370863 A114452
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 15 2014
STATUS
approved