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A261862 Terms in A261524 that are not multiples of earlier terms. 1
3, 7, 31, 73, 85, 127, 2047, 3133, 4369, 8191, 11275, 49981, 60787, 76627, 121369, 131071, 140911, 178481, 262657, 486737, 524287, 599479, 1082401 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All Mersenne primes >= 3 are terms (see A001348).

LINKS

Table of n, a(n) for n=1..23.

MATHEMATICA

n=1; t= L= {}; While[n<5000, n+=2; If[ CoefficientList[ PolynomialGCD[1 + x^n, 1 + (x + 1)^n, Modulus->2], x] !={1}, If[ Intersection[Divisors@ n, t] == {}, Print@ AppendTo[L, n]]; AppendTo[t, n]]]; L (* Giovanni Resta, Sep 07 2015 *)

CROSSREFS

Cf. A261524, A001348.

Sequence in context: A088193 A091383 A166501 * A226216 A244114 A072881

Adjacent sequences:  A261859 A261860 A261861 * A261863 A261864 A261865

KEYWORD

nonn,more

AUTHOR

Joerg Arndt, Sep 07 2015

EXTENSIONS

Corrected and extended by Giovanni Resta, Sep 09 2015

Terms a(17)-a(23) from Joerg Arndt, Sep 10 2015

STATUS

approved

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Last modified October 27 10:31 EDT 2021. Contains 348274 sequences. (Running on oeis4.)