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A166480 Greater of twin primes, written in base 6. 0
5, 11, 21, 31, 51, 111, 141, 201, 251, 301, 351, 411, 501, 521, 531, 1021, 1041, 1131, 1151, 1241, 1341, 1541, 2001, 2051, 2231, 2351, 2441, 2511, 2551, 3021, 3431, 3451, 3501, 3551, 4031, 4421, 4441, 4511, 4531, 5021, 5201, 5411, 5531, 5551, 10011 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
All but the first value are of the form 6n+1; hence in base 6 end each ends with the digit 1.
LINKS
FORMULA
a(n) = A007092(A006512(n)) = A007092(A166479(n)+2).
MATHEMATICA
FromDigits[IntegerDigits[#, 6]]&/@Select[Partition[Prime[Range[300]], 2, 1], #[[2]]-#[[1]] == 2&][[All, 2]] (* Harvey P. Dale, Jun 02 2022 *)
CROSSREFS
Sequence in context: A099400 A139534 A245773 * A164096 A298785 A163787
KEYWORD
base,easy,nonn
AUTHOR
Jonathan Vos Post, Oct 14 2009
EXTENSIONS
Extended by R. J. Mathar, Oct 16 2009
Comment amended by Harvey P. Dale, Jun 02 2022
STATUS
approved

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)