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Search: id:A060270
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| A060270 |
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Distance of n-th primorial from previous prime. |
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+0
1
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| 1, 1, 11, 1, 1, 29, 23, 43, 41, 73, 59, 1, 89, 67, 73, 107, 89, 101, 127, 97, 83, 89, 1, 251, 131, 113, 151, 263, 251, 223, 179, 389, 281, 151, 197, 173, 239, 233, 191, 223, 223, 293, 593, 293, 457, 227, 311, 373, 257, 307, 313, 607, 347, 317, 307, 677, 467, 317
(list; graph; listen)
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OFFSET
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1,3
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FORMULA
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a(n)=1 for n=2, 3, 5, 6, 13, 24, 66, 68, 167, ... (A057704); a(n)=A055211(n) otherwise - Jeppe Stig Nielsen (mail(AT)jeppesn.dk), Oct 31 2003
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EXAMPLE
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Before 7th primorial 510481 is the largest prime. Its distance from 510510 is a(7)=29.
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MAPLE
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with(numtheory): [seq(product(ithprime(j), j=1..n)-prevprime(product(ithprime(j), j=1..n)), n=3..50)];
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CROSSREFS
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Cf. A038710, A007014, A058044, A038711.
Cf. A055211.
Sequence in context: A010193 A010192 A105769 this_sequence A014469 A022174 A015125
Adjacent sequences: A060267 A060268 A060269 this_sequence A060271 A060272 A060273
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Mar 23 2001
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EXTENSIONS
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More terms from Jeppe Stig Nielsen (mail(AT)jeppesn.dk), Oct 31 2003
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