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A236848
Numbers that have at least one prime divisor encoding a reducible polynomial in ring GF(2)[X]; multiples of terms of A091209.
5
5, 10, 15, 17, 20, 23, 25, 29, 30, 34, 35, 40, 43, 45, 46, 50, 51, 53, 55, 58, 60, 65, 68, 69, 70, 71, 75, 79, 80, 83, 85, 86, 87, 89, 90, 92, 95, 100, 101, 102, 105, 106, 107, 110, 113, 115, 116, 119, 120, 125, 127, 129, 130, 135, 136, 138, 139, 140, 142, 145, 149, 150
OFFSET
1,1
COMMENTS
Numbers that are divisible by at least one prime whose binary representation encodes a polynomial which is reducible in polynomial ring GF(2)[X].
LINKS
PROG
(Scheme, with Antti Karttunen's IntSeq-library, two different implementations)
(define A236848 (MATCHING-POS 1 1 (lambda (n) (any (lambda (p) (= 1 (A091247 p))) (ifactor n)))))
(define A236848 (COMPLEMENT 1 A236860))
CROSSREFS
Disjoint union of A236844 and A236849.
Complement: A236860.
Sequence in context: A044845 A313667 A313668 * A236835 A236844 A271468
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 31 2014
STATUS
approved