OFFSET
1,2
EXAMPLE
PROG
(PARI) a(n) = denominator(sum(k=1, n, k^4)/prod(k=1, n, k^4)); \\ Michel Marcus, May 09 2020
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Petros Hadjicostas, May 09 2020
STATUS
approved