OFFSET
0,2
COMMENTS
The corresponding numerators are given in A294520. Details are found there.
FORMULA
EXAMPLE
See A294520 for the rationals.
PROG
(PARI) a(n) = denominator(sum(k=0, n, 1/((k + 1)*(5*k + 1)))); \\ Michel Marcus, Nov 15 2017
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
Wolfdieter Lang, Nov 15 2017
STATUS
approved