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A245784
Numerator of (n/tau(n) + sigma(n)/n).
3
2, 5, 17, 37, 37, 7, 65, 31, 40, 43, 145, 13, 197, 73, 107, 411, 325, 31, 401, 163, 569, 157, 577, 11, 718, 211, 889, 20, 901, 123, 1025, 701, 427, 343, 1417, 235, 1445, 421, 1745, 29, 1765, 211, 1937, 305, 277, 601, 2305, 443, 2572, 1529, 963, 823, 2917, 323
OFFSET
1,1
COMMENTS
Numerator of (n/A000005(n) + A000203(n)/n).
See A245785 - denominator of (n/tau(n) + sigma(n)/n).
LINKS
EXAMPLE
For n = 9; a(9) = numerator(9/tau(9) + sigma(9)/9) = numerator(9/3 + 13/9) = numerator(40/9) = 40.
PROG
(Magma) [Numerator((n/(#[d: d in Divisors(n)]))+(SumOfDivisors(n)/n)): n in [1..1000]]
(PARI) for(n=1, 100, s=n/numdiv(n); t=sigma(n)/n; print1(numerator(s+t), ", ")) \\ Derek Orr, Aug 15 2014
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Jaroslav Krizek, Aug 15 2014
STATUS
approved