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Search: id:A063072
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| A063072 |
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Sum of divisors of Ramanujan's highly composite numbers, or sigma(A002182(n)). |
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+0
2
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| 1, 3, 7, 12, 28, 60, 91, 124, 168, 360, 546, 744, 1170, 2418, 2880, 4368, 5952, 9360, 19344, 28800, 39312, 59520, 79248, 99944, 112320, 180048, 203112, 232128, 345600, 471744, 714240, 950976, 1199328, 1451520, 2160576, 2437344, 2926080
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(PARI) a=0; j=[]; for(n=1, 200000, b=numdiv(n); if(b>a, a=b; j=concat(j, sigma(n)))); j
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CROSSREFS
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Cf. A000005, A004394, A002183, A002473, A000203.
Sequence in context: A034434 A062325 A099811 this_sequence A007626 A047068 A081533
Adjacent sequences: A063069 A063070 A063071 this_sequence A063073 A063074 A063075
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KEYWORD
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easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 02 2001
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EXTENSIONS
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More terms from Reiner Martin (reinermartin(AT)hotmail.com), Dec 22 2001
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