login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A186893 Numbers n such that the Stern polynomial B(n,x) is irreducible and self-reciprocal. 1
1, 3, 7, 11, 31, 59, 127, 251, 377, 433, 1019, 1969, 2047, 3449, 4091, 8191, 11327, 15737, 16379, 32689, 36737, 64889, 65531 (list; graph; refs; listen; history; text; internal format)
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: A274134 A131588 A091938 * A051919 A119175 A038913

Adjacent sequences:  A186890 A186891 A186892 * A186894 A186895 A186896

KEYWORD

nonn

AUTHOR

T. D. Noe, Feb 28 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 21 06:39 EDT 2019. Contains 328292 sequences. (Running on oeis4.)