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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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3
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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; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,50
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PROG
| (PARI) a=0; j=[]; for(n=1, 200000, b=numdiv(n); if(b>a, a=b; j=concat(j, sigma(n)))); j
(PARI) { n=a=0; for (m=1, 10^9, b=numdiv(m); if(b>a, a=b; write("b063072.txt", n++, " ", sigma(m)); if (n==50, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 16 2009]
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CROSSREFS
| Cf. A000005, A004394, A002183, A002473, A000203.
Sequence in context: A099811 A196917 A182941 * A007626 A193297 A047068
Adjacent sequences: A063069 A063070 A063071 * A063073 A063074 A063075
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KEYWORD
| easy,nonn
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AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Aug 02 2001
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EXTENSIONS
| More terms from Reiner Martin (reinermartin(AT)hotmail.com), Dec 22 2001
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