login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A095014
Number of 8k+-3 primes (A003629) in range [2^n,2^(n+1)].
4
1, 1, 2, 2, 5, 5, 13, 21, 40, 70, 129, 231, 434, 819, 1505, 2884, 5358, 10198, 19303, 36847, 70173, 134233, 256831, 492856, 947182, 1822968, 3513746, 6781112, 13104524, 25348436, 49092129, 95167472, 184663536, 358631365, 697100084, 1356061232, 2639871771, 5142831980
OFFSET
1,3
FORMULA
a(n) = A036378(n) - A095013(n) = A095010(n) + A095011(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen and Labos Elemer, Jun 01 2004
EXTENSIONS
a(34)-a(38) from Amiram Eldar, Jun 12 2024
STATUS
approved