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A074813
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Number of primes between n and R(n) (inclusive), where R(n) (A004086) is the digit reversal of n.
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0
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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; refs; listen; history; internal format)
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OFFSET
| 1,10
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COMMENTS
| A060568 is the exclusive version of this sequence.
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EXAMPLE
| The primes between n = 13 and 31, inclusive, are 13, 17, 19, 23, 29, 31; so a(13) = 6.
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CROSSREFS
| Sequence in context: A134224 A121441 A190479 * A151861 A200171 A109531
Adjacent sequences: A074810 A074811 A074812 * A074814 A074815 A074816
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KEYWORD
| base,easy,nonn
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AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Sep 08 2002
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