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Search: id:A077001
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| A077001 |
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a(1) = 1, a(n+1) is the largest square-free number <= n*a(n). |
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2
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| 2, 2, 3, 7, 26, 130, 779, 5453, 43622, 392597, 3925970, 43185670, 518228039, 6736964507, 94317503097, 1414762546454, 22636200743263, 384815412635471, 6926677427438474, 131606871121331006, 2632137422426620118
(list; graph; listen)
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OFFSET
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1,1
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MAPLE
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with(numtheory):a[1] := 2:for n from 2 to 34 do q := a[n-1]*(n-1):while(not issqrfree(q)) do q := q-1:od:a[n] := q:od:seq(a[l], l=1..34);
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CROSSREFS
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Sequence in context: A076996 A139148 A038507 this_sequence A087522 A092970 A052449
Adjacent sequences: A076998 A076999 A077000 this_sequence A077002 A077003 A077004
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 26 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 26 2003
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