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Search: id:A051681
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| A051681 |
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Smallest term of first run of exactly n consecutive integers which are not square-free. |
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+0
12
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| 4, 8, 48, 242, 844, 22020, 217070, 1092747, 8870024, 262315467, 221167422, 47255689915, 82462576220, 1043460553364, 79180770078548, 3215226335143218, 23742453640900972, 125781000834058568
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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a(16) was obtained as a result of a team effort by Z. McGregor-Dorsey et al.
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LINKS
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Eric Weisstein's World of Mathematics, See also.
L. Marmet, Results
L. Marmet, About a(16), a(17) and a(18).
L. Marmet, First occurrences of square-free gaps...
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EXAMPLE
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n=5 -> {844=2^2.211; 845=5.13^2; 846=2.3^2.47; 847=7.11^2; 848=2^4.53}
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CROSSREFS
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Cf. A045882 (another version), A013929, A053806.
Sequence in context: A054881 A076687 A045882 this_sequence A056407 A056397 A123106
Adjacent sequences: A051678 A051679 A051680 this_sequence A051682 A051683 A051684
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KEYWORD
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nice,nonn
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AUTHOR
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Louis Marmet (louis(AT)marmet.org) and David Bernier (ezcos(AT)yahoo.com)
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EXTENSIONS
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a(16) reported by Louis Marmet (louis(AT)marmet.org), Jul 24 2000
a(17) was obtained as a result of a team effort by E. Wong et al.
a(18) = 125781000834058568 was obtained as a result of a team effort by L. Marmet et al.
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