This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A185712 a(n) = number of primes <= n that end in 3. 5
 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,13 COMMENTS Partial sums of A185706. LINKS G. C. Greubel, Table of n, a(n) for n = 1..5000 A. Granville and G. Martin, Prime number races, arXiv:math/0408319 [math.NT], 2004. A. Granville and G. Martin, Prime number races, Amer. Math. Monthly, 113 (No. 1, 2006), 1-33. MATHEMATICA Accumulate[Table[If[PrimeQ[n] && Mod[n, 10] == 3, 1, 0], {n, 50}]] (* G. C. Greubel, Jul 10 2017 *) CROSSREFS Cf. A185705, A185706, A185708, A185709, A185711, A185712, A185714, A185715. Sequence in context: A127321 A111897 A185711 * A135665 A135662 A111853 Adjacent sequences:  A185709 A185710 A185711 * A185713 A185714 A185715 KEYWORD base,nonn AUTHOR N. J. A. Sloane, Feb 10 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.

Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)