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A073066
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Least k such that n*prime(k) <= k*tau(k).
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0
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2, 24, 180, 840, 2520, 5040, 15120, 27720, 55440, 110880, 166320, 221760, 332640, 554400, 720720, 1081080, 1441440, 1441440, 2162160, 2882880, 3603600, 4324320, 7207200, 7207200, 8648640, 10810800, 14414400, 21621600, 21621600, 21621600, 32432400, 36756720, 36756720, 43243200, 61261200, 73513440
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(n) divides a(n+1) for some n.
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PROG
| (PARI) a(n)=if(n<0, 0, s=1; while(n*prime(s)>s*numdiv(s), s++); s)
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CROSSREFS
| Sequence in context: A108476 A157053 A052411 * A002736 A131972 A059387
Adjacent sequences: A073063 A073064 A073065 * A073067 A073068 A073069
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 17 2002
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EXTENSIONS
| More terms from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 06 2008
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