OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
PROG
(PARI) usigma(n)= { local(f, s=1); f=factor(n); for(i=1, matsize(f)[1], s*=1 + f[i, 1]^f[i, 2]); return(s) } { for (n=1, 1000, k=1; while (usigma(n + k) != usigma(k), k++); write("b065343.txt", n, " ", k) ) } \\ Harry J. Smith, Oct 16 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Jason Earls, Dec 02 2001
STATUS
approved