A186893 Numbers n such that the Stern polynomial B(n,x) is irreducible and self-reciprocal.

1, 3, 7, 11, 31, 59, 127, 251, 377, 433, 1019, 1969, 2047, 3449, 4091, 8191, 11327, 15737, 16379, 32689, 36737, 64889, 65531

Offset

1,2

Comments

This appears to be numbers of the forms 4^k-5 for k>1, 2^p-1 for odd primes, and 377, 433, 1969, 3449, 11327,....

Links

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

Formula

Intersection of A186890 and A186891.

Crossrefs

Cf. A186890, A186891.

Sequence in context: A361680 A091938 A333424 * A051919 A119175 A038913

Adjacent sequences: A186890 A186891 A186892 * A186894 A186895 A186896

Keyword

nonn

Author

T. D. Noe, Feb 28 2011

Status

approved