OFFSET
1,2
LINKS
Harry J. Smith, Table of n, a(n) for n=1..200
EXAMPLE
a(4) = binomial(sigma(4),4) = binomial(7,4) = 7!/(4!3!) = 35.
MATHEMATICA
Table[ Binomial[ DivisorSigma[1, n], n], {n, 1, 32} ]
PROG
(PARI) { for (n=1, 200, a=binomial(sigma(n), n); write("b066090.txt", n, " ", a) ) } \\ Harry J. Smith, Nov 12 2009
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Joseph L. Pe, Dec 30 2001
EXTENSIONS
Corrected and extended by Robert G. Wilson v, Dec 31 2001
STATUS
approved