Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A074813
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A074813 Number of primes between n and R(n) (inclusive), where R(n) (A004086) is the digit reversal of n. +0
1
0, 1, 1, 0, 1, 0, 1, 0, 0, 4, 1, 3, 6, 7, 9, 12, 14, 15, 17, 8, 3, 0, 3, 4, 6, 9, 11, 13, 15, 9, 6, 3, 0, 3, 5, 7, 10, 11, 12, 10, 7, 4, 3, 0, 2, 4, 7, 8, 9, 13, 9, 6, 5, 2, 0, 2, 5, 7, 8, 14, 12, 9, 7, 4, 2, 0, 3, 4, 5, 16, 14, 11, 10, 7, 5, 3, 0, 2, 4, 18, 15, 13, 11, 8, 7, 4, 2, 0, 2, 20, 17 (list; graph; listen)
OFFSET

1,10

COMMENT

A060568 is the exclusive version of this sequence.

EXAMPLE

The primes between n = 13 and 31, inclusive, are 13, 17, 19, 23, 29, 31; so a(13) = 6.

CROSSREFS

Sequence in context: A090724 A134224 A121441 this_sequence A151861 A109531 A073817

Adjacent sequences: A074810 A074811 A074812 this_sequence A074814 A074815 A074816

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Sep 08 2002

page 1

Search completed in 0.003 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


AT&T Labs Research