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Search: id:A082278
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| A082278 |
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a(1)=1; for n >= 1, a(n+1) is minimal such that there are a(n) primes strictly between a(n) and a(n+1). |
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4
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| 1, 3, 12, 60, 390, 3320, 35570, 471620, 7543118, 142663878, 3136936508, 79061105312, 2256802761948
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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3 is the only prime in the sequence.
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EXAMPLE
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There are 3 primes (5,7,11) between 3 and the next term 12.
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MATHEMATICA
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a[1]=1; a[2]=3; a[n_] := a[n]=1+Prime[1+Sum[a[i], {i, 1, n-1}]]
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CROSSREFS
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Cf. A082279.
Sequence in context: A105752 A053532 A159867 this_sequence A078162 A002497 A161799
Adjacent sequences: A082275 A082276 A082277 this_sequence A082279 A082280 A082281
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KEYWORD
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more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 13 2003
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EXTENSIONS
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Better description from Vladeta Jovovic (vladeta(AT)eunet.yu), Apr 15 2003
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